In Saints Row: The Third (aka Saints Row 3) for the PC, PS3, and Xbox 360, you can unlock the Wraith, which is essentially a copy of one of the cars in the Tron movies.
To unlock the Wraith, you need to complete all of the Trail Blazing activities in the Decker district.
You can also unlock the X2 Phantom, which is the light cycle from Tron by doing this.
