Thing is for a game you can control the cars performance by changing the laws of physics. For example, you don't have to know that this aerodynamic device cause

Thing is for a game you can control the cars performance by changing the laws of physics. For example, you don't have to know that this aerodynamic device causes a vortex at such and such a speed -- you can just say they're driving in a vacuum and 'this is how fast the car can go around this corner'.