The very shoe-like 2010 Toyota Prius has made its official debut at this week's Detroit Auto Show. The company estimates it'll have a 50 MPG rating -- up from 46 MPG in the previous model -- and there's a bigger, 1.8-liter four-cylinder engine for improved highway mileage. In addition to Power and Eco driving modes, EV Drive will let you run on battery alone for about a mile, which if nothing else should provide a little extra push for getting to the gas station when you've held off for too long. One of the coolest (literally) new features is the optional solar panels in
