S1, E4: Jonny Lieberman pits the supercharged 2011 Cadillac CTS-V Sport Wagon against the twin-turbo 2012 Mercedes-Benz E63 AMG Wagon.


S1, E4: Jonny Lieberman pits the supercharged 2011 Cadillac CTS-V Sport Wagon against the twin-turbo 2012 Mercedes-Benz E63 AMG Wagon.