Check out the following footage hosting a family station wagon against a supercar in a quarter mile showdown. On the left the 2011 Cadillac CTS-V Sport Wagon equipped with the 650hp Hennessey V650 engine upgrade and on the right the Porsche 911 Twin Turbo producing 480hp. The curb weight differs only 949lbs in favor of the 911.
The Hennessey Cadillac does the zero to 60mph in 3.5 seconds, same as the Porsche. The quarter differs 0.1 seconds in favor of the Cadillac at a similar speed of 121mph.