The Spira is a lightweight, fuel-efficient, three-wheeled, two-passenger car designed for the roads of

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainlan ...

. 90% of its bodywork is made from a lightweight, reinforced foam. The car weighs only , and has a fuel efficiency of more than 100 mpg. The car's foam contains millions of air cells, and these act as tiny airbags during collisions, which offers protection to the car's occupants, as well as to the pedestrians, bicyclists, and motorcyclists who are very common in the areas where the car is planned to be used. The car's foam can be made from soybeans. The car, which was invented by Lon Ballard, has been entered into the

Progressive Insurance Automotive X Prize The Progressive Insurance Automotive X PRIZE (PIAXP or AXP) was a set of competitions, programs and events, from the X Prize Foundation, to "inspire a new generation of super-efficient vehicles that help break America's addiction to oil and ste ...

competition.Foam-bodied Spira set to make a soft impact on deadly Asian roads
gizmag.com, May 28, 2009

References

Three-wheeled motor vehicles {{Modern-auto-stub