I'm sure all of us agree that operators should be responsible for their actions as coincidently all adults should be but I think the gentleman was attempting to find the mechanical or electrical failure or anomaly at the root of the issue he's having. I haven't had time to attempt to replicate the problem but the way the speed control works on the toy trucks allows the unit to accelerate to speed normally until the desired speed is reached based on a gear tooth counter in the diff. if you have ever driven one you noticed that the truck will go just past the speed then RPM's will drop and speed will drop and level off at the preset level. It may be that rapid reversing allows extended acceleration time at high RPM levels as the desired pulse from the sensor is not reached and this could allow at least temporary access to speeds above the preset level. just a thought.