Ford Mustang "Road King" out in the wild. Nowhere near as long a modification cycle as the Sunray, mainly because the design is a lot simpler. And the game didn't break nearly as often. Based on FO2 concept renders where the car actually wore #95.
Nissan Skyline "Sunray" out in the wild. Game decided to break a few times whilst making this one. Maybe it thought better of people making remakes of cars from other games.