It doesn't appear to have any collision detection at all. You can drive through walls, over water, through barriers.

The world state seems to be limited to the 2D velocity and 2D position of the vehicle. There's no instability in the vehicle, no loss of control, no loss of traction, spins, brakes locking up.

I guess my point is there's nothing going on under the hood. This could be done in any language that's got an OpenGL API. (or D3D, GLES, Vulkan...) I'm not sure what the takeaway is.

(it looks cool though)

It's just a tech demo I guess. Should be simple to get car physics working, but getting full collision detection working would be another matter entirely.

No real physics engine and the car leans slightly to the left...

This is a port, the original is here: https://github.com/pmndrs/racing-game It uses cannon-es (physics).