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![The Spira]()
The Spira uses reinforcing fibers and aluminum to provide a strong a protective cage covered with soft foam on both the outside and inside.![300 Pounds Light]()
Because of its foam construction, the five-by-ten foot three-wheeler weighs just 300 pounds -- and is expected to exceed 100 miles per gallon.![Automotive X Prize Finalists]()
The Spira is one of 15 cars left in the X Prize competition, aimed at finding the most fuel-efficient car.Foam Car Floats -- and Gets 100 MPG
Lon Ballard's entry for the Automotive X Prize competition, the Spira4u, is a two-seat, 300-pound foam car that floats like a boat and gets 100 miles per gallon.
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- Foam Car Floats -- and Gets 100 MPG
