Toyota unveiled the all-new 50-mpg third-generation Prius hybrid at the 2009 North American International Auto Show in Detroit. In addition to better mileage ratings, the midsize 2010 Prius will be quieter, roomier and equipped with advanced standard and available features such as a moonroof with solar panels, four driving modes, Intelligent Parking Assist (IPA) and steering wheel touch controls that display on the instrument panel.