Hennessey is known for taking high performing cars and tuning them to get even more performance out of these cars. Hennesssey has down work on the Nissan GT-R, Chevrolet Camaro, Ford GT, and many other cars. Hennessey has also added two turbochargers to the Dodge Viper, calling it the Hennessey Viper Venom 1000 Twin Turbo.I saw the Hennessey Viper Venom 1000 Twin Turbo at the January 2011 edition