In 1893, the world's biggest event was the opening of the Chicago World's Fair on May 1, an event held in the United States, and it was only natural for the Germans to attend.

Of course, Jochen will also have to promote his products at the Expo, and it is only natural that BMW's various models of cars will be unveiled at the Expo.

With BMW's reputation growing and the sales network of 4S stores in Western Europe basically spreading, the automobile has become a strong emerging industry in Germany.

Although the extremely luxurious BMW-Daimler DS1 is not sold well, except for some top tycoons such as the Russian Tsar Alexander III and the German arms giant Krupp, other ordinary tycoons still respect it, but this does not prevent BMW from having a high reputation in the automobile market.

Thanks to Maybach's continuous efforts, the latest inline 4-cylinder gasoline engine can already provide more than 40 horsepower. With the power of the power, Benz soon used this engine to build the world's first bus, and Daimler built the world's first truck.

The inventors of the bus and truck have not changed because of Jochen's influence, but the time has been advanced by two and three years, respectively, and the performance of the vehicles has improved.

Extended carriages, double doors in front and back, 20 seats opposite, the emergence of buses has started a revolution in the increasingly urbanized German transportation system, and under the impetus of Jochen, several populous large cities in Germany have begun to replace horse-drawn carriages with buses and build a more complete urban bus network.

The advent of trucks is a more important invention than buses in Germany, which is undergoing large-scale infrastructure construction and has a great demand for material transportation capacity. The huge advantage of the truck's carrying capacity over horse-drawn carriages soon gave this vehicle a place in the market.

And the value of the truck is more than that, its value in military use is no less than the strategic value of the railway. During the Battle of Verdun, the French army transported 190,000 soldiers and 25,000 tons of supplies in 3,900 trucks in one week, which had a huge impact on the course of the war.

The failure of Schlieffen's revolving door was also hampered by poor transport efficiency and slow troop movements.

As an example, Jochen's companies took the lead in replacing their own transport vehicles with newly-born trucks.

Of course, it is still the price that limits the rapid adoption of both vehicles, but the efficiency advantage of the car will gradually become apparent, and it will take time and patience for this, and this patience is that Jochen has.

With the rise in demand for automobiles, the improvement of tire technology has become an extremely urgent need, and the carbon black rubber and cotton cord layers have been proposed by Jochen and began to be applied in automobile tires.

The development trend of automobiles has also increased the price of rubber, but fortunately, German Cameroon is a good place to produce rubber, although the total output in the future is not as good as that of the rubber producing countries in Southeast Asia, but the average yield of 1200 kg per hectare of rubber production will be much higher than the 700 kg of Malaysia and 400 kg of Indonesia in the future.

Ever since the car hit the ground, Jochen, who knew that there would be a huge demand for rubber in the future, began to build rubber plantations in Cameroon. With the introduction of clover rubber from South America, which has the highest rubber yield, Cameroon's rubber plantation industry has also grown along with the development of the automotive industry.

The demand for petroleum products is also increasing year by year. Oil companies in the United States, Cameroon and Nigeria are also gradually increasing their production capacity, and the scale of oil refineries is also increasing.

A chain of huge profits driven by the automobile market is gradually taking shape.

Due to the strong consumption power of the European market and the demand in Germany, BMW's original annual production of 10,000 units began to be stretched, and the expansion of production capacity has become the next major task of BMW, separating the production of buses and trucks, which mainly focus on carrying capacity.

North America, which also has huge spending power, has not been able to reduce prices due to transportation costs. In order to seize the market in the United States, BMW decided to build a branch plant in the United States, and this World Expo is also a prelude to BMW's large-scale attack on the United States. Naturally, two new models will also be exhibited.

But there's a new gadget that needs to be sent to Chicago to join in the fun.

Jochen saw this new gadget at the Augsburg Maschinenfabrik that was going to be sent to the United States, a tracked gasoline tractor.

Diesel's previous horizontal single-cylinder four-stroke 8-horsepower diesel engine can already be used for walk-behind tractors for small fields. However, thanks to Jochen's promotion, Germany's new agricultural Junkers have united large-scale farms, and the demand for agricultural machinery is something larger.

So the market for walk-behind tractors wouldn't be huge, and Jochen didn't offer to make such a thing. The in-line 4-cylinder diesel engine developed later only has an output of 20 horsepower, which is 4 horsepower more than the 4-cylinder gasoline engine taken out by Maybach five years ago, but it is nearly twice as heavy in weight. The only advantages are more torque and lower fuel consumption.

So Jochen thought that even if it was put on the market, it would not be advantageous, so he blocked the Augsburg Maschinenbau's plan to put this bulky thing on a tractor.

In desperation, Diesel had no choice but to continue to work hard to improve the output power of the diesel engine, but now it seems that at least one or two years will not be able to come up with more reliable products.

However, tractors still have to be built, the progress of German agricultural industrialization continues, and the demand for production machinery is also increasing.

Not only does it have to constantly add coal and firewood to the boiler in its work, but the extremely low combustion efficiency makes it provide enough horsepower to carry the coal or firewood that can make him work for a day.

Just imagine the ridiculous scene of a steam tractor working and having to be constantly carried with fuel on it, just how unreliable this thing is.

In order for the Junkers to cooperate and industrialize agriculture more actively participate in the tide of industrial agriculture, suitable agricultural production machinery is indispensable.

So the original 16 hp inline 4-cylinder gasoline engine was installed on the tractor, and it was a success. The inefficient, cumbersome steam tractor was quickly phased out, and tractors can now be seen puffing green smoke in the fields of Germany.

The popularity of gasoline tractors began to revolutionize the production of German agriculture, and the work that used to require a lot of manpower to do was easily completed by strong mechanical power. The Junker aristocrats, who complained about the reluctance of young people to stay in the fields, began to face up to the convenience of mechanical farming that His Royal Highness had proposed.

The use of machinery makes the efficiency of farming more secure, after all, the efficiency of manual farming is changing, and machinery basically does not have this problem. Coupled with the fact that they had joined forces with others to concentrate on farming, the Junkers found that the larger the area, the better the machinery would show, the higher the crop yield, and the lower the cost of production.

As a result, the profit-seeking Junkers began to move towards the road of industrial union, and by replacing manpower with machinery, they could save a lot of money on hired labor. As a result, a large number of rural people lost their jobs and were liberated from the land.

Even young people who are willing to stay in the fields are now forced to go to the cities in search of new jobs. This has further fueled the process of urbanization, which is now possible to build so much of the scale of Germany's infrastructure, which would not have been possible in the past.

The advance of urbanization, the rise of industrial productivity, the increase of skilled workers and even the increase in the mobilization capacity of the army would greatly increase Germany's war potential.

Therefore, after seeing a series of benefits, the government began to introduce a series of relevant policies on the use of agricultural machinery, and through various preferential policies to improve the role of machinery in agricultural production. Gasoline tractors soon became the most popular agricultural machinery in Germany.

However, Jochen was actually not satisfied with this tractor. Although the gasoline engine has great advantages in the output power and power-to-weight ratio, the fuel utilization rate is relatively low, which will inevitably lead to an increase in agricultural production costs. And for work in the field, gasoline engines with lower torque are not very suitable for jobs that require "strong energy".

What's more, perhaps influenced by the early steam tractor, which had large, wide hard tires to increase the ground contact area and reduce pressure, was not only bulky but also ineffective.

This can't be helped, although the technology of pneumatic tires has advanced, but for tractors working in the field, pneumatic tires are still too delicate, poor driving conditions make the tires wear extremely harsh, and the strength of cotton cord is not enough to guide zhì often aging earlier than the tread itself.

Moreover, the grooves of the car tires are too shallow, and the tire width is insufficient, and the tractor has better driving performance on the soft ground when the tire is insufficient, and the large-size high-strength low-pressure tires will not be able to take out for a while and a half.

So there was no choice but to use this old method, so Jochen came up with the design he had always wanted, a crawler running mechanism.

And now, the Augsburg Maschinenfabrik has come up with the first real machine.

Although it is now just a simple iron plate pinned together, it is still a true "infinite track". The wheels are rigidly connected to the body, and driving in a bad place is definitely not a pleasant experience for the driver.

But looking at this humble thing, Jochen's heart was thrilled.

In 1906, the American Holt Company built the first tracked gasoline tractor, which quickly became the most successful tractor of its time, although this was not Jochen's concern.

Jochen's excitement later became the reference model of the world's first tank "Little Nomad" was the American Blauck tracked tractor, and later the French Saint-Chamont and Schneider tanks simply used the tracks of the Holt tractor.

With a tractor, is the tank still far?

Actually, it's still quite far.