Forza Motorsport 4 players can down purchase and download the September Pennzoil Car Pack.
At 560 MS Points the new car pack adds 11 new cars to your ever bulging garage, the stars of which are a pair of 2013 Viper SRT GTS-Rs, which you can see tearing around a racetrack in the teaser video below.
Buyers of the DLC update are also today able to take their shiny Vipers racing in a new Rivals Mode event at Road America, which also went live today.
Here's the full September Pennzoil Car Pack vehicle list:
- 2013 Viper #91 SRT Motorsport GTS-R
- 2013 Viper #93 SRT Motorsport GTS-R
- 1968 Alfa Romeo 33 Stradale
- 1960 Aston Martin DB4 GT Zagato
- 1958 Austin-Healey Sprite MKI
- 1953 Chevrolet Corvette
- 1965 MG MGB GT
- 1955 Mercedes-Benz 300 SLR
- 1967 Volkswagen Karmann Ghia
- 1983 GMC Vandura G-1500
- 2011 CitroŽn DS4