Back Wheel Gyroscope?
 

Have any of you ever used the Tyco RC Stunt Cycles? If so you notice that they maintain theyre stability incredibly well with the use of a gyroscope in the back wheel. It's really just a weighted free spinning disc thats inside the back wheel that is kept spinning as the bike moves creating enough g-resistance to allow sharp turns and stability. It seems to me if you could incoperate this nifty feature into the micro-bike youd really have something.

Agreed. If the bikes were designed with the said gyroscope and the back wheel was actually powered by the motor....they would probably sell on par with the cars.