There were several groundbreaking cars to see at the 2011 Arizona International Auto Show. The first was the much-anticipated Chevrolet Volt plug-in hybrid. I took a test drive of that car and the new twin-turbo V6 Taurus SHO. Audi had their new R8 spyder on display. The other big draw was the Chevrolet Camaro LS7 concept car, which packs a powerful 586 horsepower V8 engine.