The compressed air vehicles that run in Maldonado Uruguay South America in 1993 100 kilometers with only one charge of compressed air in its tanks thank to the special free piston and freewheel compressed air engine. (I have videos of the car and the motorcycles running). In this moment are dying 1000 people every day for the air pollution in the world and 100 in USA. For asthma in USA 6 millions attack, 150000 in emergency rooms every year for the air pollution. Let the people live longer and healthy.