Ok, I found a solution to the same problem that happened to me. Be careful with editing the Torque Curve and Transmission Setup, a bad configuration slows down the car. Furthermore, the Root Physical Body does not have to touch the ground.
Ok, I found a solution to the same problem that happened to me. Be careful with editing the Torque Curve and Transmission Setup, a bad configuration slows down the car. Furthermore, the Root Physical Body does not have to touch the ground.