Wouldn't it be interesting to have some sort of rc dyno, which you would place the driven wheels on a tachometer and have the drive pull full throttle before placing the car on the track?
Using the actual wheel speed of the vehicle may be a good way to regulate cars using rubber tires. Obviously, this can be fooled using the transmitter settings, but if bullet connectors on the motor were mandatory, you could just plug the motor into a variable power supply, and remove the ESC from the equation.
Just a suggestion.