Answer:
It can cause deflation of tires when dropped from the rear of spy cars.
What lies in a tunnel of darkness. That can only attack when pulled back?
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
Goes over all the hills and hollows. Bites hard, but never swallows.
Just head and foot yet never tires of dancing.
You use it between your head and your toes, the more it works the thinner it grows.