you need a sharkport & a program called MK V38
basically the car is coded into the game, but couldn't be used because of licensing so you need to insert the car into the garage (has to be downloaded from your mem card w/ the sharkport to your computer then loaded into MK)
The Diablo isn't the only car either... the Porsche 996, various development sample cars, The Chrysler Oreca Viper, a couple addition Stratos versions, etc. are all in there. even a Skyline with a floating ball over the roof and a rotory engine can be found in there.
-Mark
