Matt Molnar
2008-02-23, 01:41 AM
Using a combination of compressed air and conventional fuel, these things may get 100mpg for under $18,000.
http://www.popularmechanics.com/automot ... ?series=19 (http://www.popularmechanics.com/automotive/new_cars/4251491.html?series=19)
http://www.popularmechanics.com/automot ... ?series=19 (http://www.popularmechanics.com/automotive/new_cars/4251491.html?series=19)