Let You Build an Engine. What the Hell Is This Combat Engine?

Chen Xiuyuan traveled to a parallel world and owned a production factory. In order to participate in the racing meeting the next day, his friend asked him to help modify the car. The requirement is very simple, just improve the engine performance a little bit so that it doesn't lag behind. Looking at this Ford S200 from the 1980s, it is full of rust and one of the doors is missing. System awakens! Congratulations to the host, the production system is being activated! Production Plan: Supersonic Combat Engine! Material 1: Aluminum alloy! Material 2: Iron! Material 3: Plastic! Material 4: Rubber! With the system in place, Chen Xiuyuan smiled. "Let me watch it change, right?" The competition started, and it turned out that the speed was 6,000 per hour, and it took off directly from the spot! Everyone is shocked! Friend: "Holy shit! I asked you to watch it, what the hell is the speed of 6,000 per hour? What the hell is this supersonic combat engine?" Chen Xiuyuan: "You asked me to watch the changes, so you blame me. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.