Audi Active Safety

S1 E5: The Detroit Motor Show is the biggest auto show in the US. Manufacturers like Ford and GM use the NAIAS to present their eco-friendly products. But German car makers BMW and VW are present as well. Plus: After its debut in the Audi Q5, the hybrid engine finds its way into sedans. Go Green reviews the Audi A6 Hybrid. Its boost the electric engine can briefly be switched to the gasoline engine.