It isn't shown in the video, but you have to put the whole car together from parts: https://www.youtube.com/watch?v=aI0TxB9rspI Btw, the developer is the same guy who is known from the sports documentary (enable subtitles): https://www.youtube.com/watch?v=phOjmGxK5EQ
In the first video he adjusted the valves with the valve cover off and the engine running ... did this madman simulate movement of the valves, cam, pistons, etc? To do it at the granularity needed to make that valve adjustment an organically arising need would be too computationally intensive I think. But how far did he go?
Doesn't matter - this guy is great.