The on-board control core can be seen at the drawing stage, and there is a gap in its core area for Cortana. This suspicion was quickly confirmed by Cortana.

Look at the blue light emitted by a 3D printer when it prints a job. New worries have surfaced in Gou's mind. According to the document provided by Cortana, artificial intelligence is in a state of being monopolized by the large civilization in the Galactic Intelligent Civilization Federation, and marginal civilizations like humans are not allowed to have artificial intelligence. Then, the on-board control core that requires artificial intelligence as the core component should not be allowed to be contacted by human civilization. Obviously, the Intervention Action Team took a lot of money and risk to bring out the blueprints of the core of control and hand them over to Gou Cao.

If the apocalypse is just a threat from clumsy zombies and ill-intentioned humans, as depicted in The Walking Dead, then Gou's previous revamping of the garage should be enough to deal with. However, they took the risk of sending Cortana and the Control Core to Gou, and it was clear that the challenge was far greater than he had imagined.

Now more questions have arisen, why should the joint conference restrict the use of artificial intelligence by marginal civilizations? Why didn't the Interference Task Force send it something else than artificial intelligence? According to the text provided by Cortana, there is more than one node selected by the Interference Action Team to guide the worldline to intervene in time and space, but artificial intelligence is not like it can put so many things, what makes it so special? According to the experience of the planet, several powerful countries limit the possession of nuclear weapons to other countries because they are too powerful, so is artificial intelligence also a threat to several large civilizations in the joint conference?

It doesn't make sense, it doesn't make sense, Gou scratches his hair and thinks that if he is in a novel, the hole dug by the author is too big.

If you can't solve so many problems, let's not do it first, first sort out what can be done, survive the outbreak of the virus, and maybe there will be a chance to get some clues in the last days.

Fifteen days later, the test battery, drive system and control core were printed. Cortana's design disappeared after being printed once, and she scanned it with the printer and found that she couldn't copy it. So I had to put the only Cortana on it. The nano armor was not printed, so the test car only had the chassis and exposed interior parts.

The test results were satisfactory to Gou Cao. The power output of the battery is stable, the drive system is flexible and safe, and the control core is running normally. Cortana comes with an automatic driving function, so that the Gou who just got the driving book is relieved, with his driving skills, it is okay to drive on the smooth road before the end of the world, and if the road conditions are very poor, then he will be rich. And Cortana doesn't have this problem, and Cortana, who has a pure and soft electronic female voice, is a skilled veteran driver, and she will rely on her to drive in the future.

After familiarizing himself with the operation and installation process of these three modules, Gou Cao spent another three days testing the nano armor. Although this thing is called nano armor, it is essentially just a sandwich plus a set of nanorobot production and deployment equipment, and the protective role still depends on the separately designed armor. The finished nano sandwich product is a soft film, which can be installed on any parts and armor, and cannot increase the operation efficiency and armor protection strength of the parts, but it can quickly repair the damaged parts during the battle, increase the survivability of the vehicle, and can also undertake the maintenance of the vehicle in peacetime, which can save a lot of worry for liberal arts students.

Familiar with the basic components created by the vehicle, Gou Cao can finally put them into use. Although the test took a long time, it was worth it. After all, if you are like the protagonists in some novels, if you get something you are not familiar with, you will try it and use it directly in a life-and-death situation, I am afraid that you will not be on the street. Gou Ke doesn't think he has the aura of a protagonist like them. Even if there is, it will not be such a waste.

The first is the choice of the model, there are no chariot drawings in the 3D printer, and even if there is, it is impossible to print out the whole thing at once, so this thing still has to show itself like an overall style, and then let Cortana optimize it in the details.

After a period of hard thinking, Gou Cao found that he had almost no talent for chariot design. Let's take a look at the existing body design. With Cortana's help, Gou Cao, who had difficulty choosing because of too many choices, finally decided on the target model after a week: the domestic ZBL-09 wheeled infantry chariot.

The ZBL-09 wheeled infantry combat vehicle is 8 meters long, 3 meters wide, 2.1 meters high, weighs 2.1 tons, and carries 3 people. As early as 2030, the whole line will be retired, so the level of confidentiality is not very high, and there are many related data maps on the Internet. Anyway, as long as you copy the car shell, you have to design the interior space yourself, so these data maps are enough.

So the general idea now is that the shell is directly copied from the ZBL-09, and then the interior of the body is replaced with the technology products provided by Future Technology. The limited interior space of the 09 wheeled infantry chariot is limited by the size of the power and fire control system, coupled with some other miscellaneous equipment, which seriously limits the interior space it has. And the future technology products that Gou Cao has can greatly save the footprint. Cortana estimates that there will be 16 square meters of space left in the car, which is quite spacious.

The rest of his life was quite exciting, and he fantasized about having a doomsday chariot of his own when he was very young. And now the dream is about to come true, and although Gou Cao is quite tired every day, he is also quite open. Adjusting the parts over and over again with Cortana, and then laboriously putting them on, the exacting post-apocalyptic chariot gradually takes shape in the repair shop of the garage.

After three months, you're done!

The eight-and-a-half-human-tall tires are the toughest bulletproof design Gou can find, and can withstand direct fire from most subsonic pistols up to 6 meters. The rear of the vehicle inherited the design of the prototype ZBL-09 with a propeller thruster equipped with an annular nozzle, and the hull also maintained a sealed design, allowing it to sail on water, and thanks to the improvement of the driving equipment, the new combat vehicle reached a speed of 30 kilometers per hour on the water, more than three times that of the ZBL-09.

The new car is equipped with three high-energy batteries, and with the all-electric drive system, the top speed of the empty car on the road of the post-apocalyptic chariot can reach 200 kilometers per hour, considering that the road conditions will get worse after the end of the world, coupled with the need for energy saving, Cortana's usual travel speed is maintained at 70 kilometers per hour empty and 50 kilometers per hour with a full load. When the battery is fully charged, it can drive 5,000 kilometers on a flat road at a speed of 50 kilometers per hour, and with the retractable solar charging panel on the roof, the range is enough even to travel around the Republic.

Then there's the control core, which isn't very useful on its own, but it's compatible and integrates a lot of things. For example, the previous test car was able to achieve autonomous driving under Cortana's control only after connecting the drive system with the control core. In the finished vehicle, the control core also integrates air conditioning and ventilation equipment, and the sealed body can achieve nuclear, biological and chemical protection. With Cortana's help, Gou Cao also integrated the nanorobot production and deployment equipment, so that the repair and maintenance of the vehicle in the future will also be handled by Cortana, which can be more efficient.

Finally, the protection, the tank armor is composed of high-strength alloy materials and lined ceramic armor, these are civilian materials that can be found, 5.56mm and below rifles pose no threat, but under the fire of machine guns above 10mm, it is a bit enough. But enough. After all, this is in the country, where did so many guns come from. If there are too many zombies, it may cause some damage, but with nanobots repairing, nothing big can happen.

With the help of Cortana, Gou Cao enlarged and enhanced the steel crossbow in the drawing editor that came with the 3D printer, which can fire steel crossbow arrows half a meter long and two centimeters in diameter, with a maximum rate of fire of 15 seconds per shot, and the loading and firing need to be completed mechanically, with a range of up to 600 meters, which can pierce the pickup truck that Gou Cao uses to pull goods. Fighting zombies is too powerful, but arrows loaded with explosives on the roof of the car can be used as an anti-vehicle weapon. You can usually store it in the car, and if necessary, you can catch the gangsters off guard.

After three months of hard work, it was done. The moment she sat in the driver's seat, Cortana's gentle electronic voice came from her ears:

"Welcome in, Commander."