New Toyota Prius 2011

Prius is certified as a Super Ultra Low Emission Vehicle (SULEV), which means it runs 75 percent cleaner than the standard for Ultra Low Emission Vehicles (ULEV). That's a remarkable feat. Prius' hybrid powertrain and regenerative braking systems are sure to garner the lion's share of the media's attention. But little things add up too. Here are some of the unsung energy-efficient innovations