Audi A8L TDI
Audi shows off its A8L TDI on Nov. 28, 2012, at the L.A. Auto Show in Los Angeles.
Credit: Frederic J. Brown/AFP/Getty Images, CBS
Audi shows off its A8L TDI on Nov. 28, 2012, at the L.A. Auto Show in Los Angeles.
Credit: Frederic J. Brown/AFP/Getty Images, CBS