This might be a little off topic, please be understanding.
In case of an RC car toy (specifically, for children) you can control the speed of the car via the transmitter. I am wondering, if I were to customize the transmitter and limit the maximum speed of the car, let's say, to half of the original, do I (or the kids) get to enjoy playing for double the time with the same batteries? (for the sake of simplicity, let's say that the throttle on the customized transmitter can only be pushed half way)
So does the transmitter control the power consumption of the RC car, or it's only a torque to rpm conversion?