Torsion Assist to Vehicles

Hybrid batteries are both expensive and filthy. A similar system can help you build higher peak Hp and recoup energy while traveling downhill and braking. It will actually increase your car's braking ability as well.

The wind up car. Obviously not the primary form of propulsion, but to replace Liion batteries. An adequate winding mechanism can provide numerous additional Hp of power to a car during peak use and could potentially provide the difference in force between idle and peak RPM when traveling at slow speeds.

Having a crank-charging vehicle would also be an interesting concept. If you could turn a nut on your car using a crank to fuel it up instead of having to put gasoline in it, we would have far stronger and healthier Americans.