[Mauzen]

Somehow I dont get why you want the "real world speed" with quadratic or cubic calculation ingame. It might look nice when used for a speedmeter or whatever, but it actually doesnt tell anything about the speed of the vehicle. Velocity is a linear value that resembles the speed of the vehicle in the gta world. Moving with doubled speed also means the velocity doubles, and so the ingame kmh/mph doubles. Some polynomial speed value would be rather confusing: You double the ingame speed, but the speedmeter just goes up like 50%. The speedmeter then doesnt give you any hint about how fast you are moving, but just about how fast you would be IRL. I dont get why you would want that.