Forza Ultimate - Sample. This sample contains one car from the Forza Motorsport 3 Ultimate Collection: the 1955 Porsche 550 Spyder. In-game credits required to purchase this car in Season Play. The Forza Motorsport 3 Ultimate Collection contains cars from all Forza Motorsport 3 DLC packs, and seven exclusive cars only available in the Ultimate Edition, including: the 1971 Chrysler Plymouth Cuda 426 Hemi, 1956 Jaguar D-Type and 1982 Lancia 037 Stradale. The Forza Motorsport 3 Ultimate Collection is available for purchase at your local retailer.