In this Jan. 12, 2011 photo, a 2011 Honda Civic Hybrid is shown at the North American International Auto Show in Detroit. Vehicles that go 40 miles on a gallon of gasoline are becoming more common, ... more 
In this Jan. 12, 2011 photo, a 2011 Honda Civic Hybrid is shown at the North American International Auto Show in Detroit. Vehicles that go 40 miles on a gallon of gasoline are becoming more common, prompted by government requirements and advances in technology. less 
1 / 1
Associated Press | Photo By Paul Sancya
Fri, Feb 25, 2011 9:02 AM EST