Now we have Frenchman Guy Negre and his Aircar, whose fuel is compressed air.

FORBES: Driving on Air

Negre's Motor Development International has test Aircars zipping around the French Riviera near the company's offices outside of Nice.

FORBES: Driving on Air

Negre presumes that these franchisees will buy parts, assemble them and sell cars directly to the public from a small showroom on the site of the factory.

FORBES: Driving on Air

"The future of cars is air, " Negre says.

FORBES: Driving on Air