A car under $7K that gets 84 mpg

The Elio is a motorized trike that seats two and is capable of achieving 84 miles per gallon thanks to its lightweight, aerodynamic design and 3-cylinder, 0.9-liter gas engine. If you're deterred by the Elio's small footprint, slight seating capacity and modest performance, keep in mind its projected retail price of under $7,000 and the little 3-wheeler starts to make a bit more sense.