276855cb_Grand_Theft_Wiki__the_GTA_wiki__Description
[Unique trait] Unobtainable [Code] U [Description] 
The vehicle cannot be accessed or driven by the player outside the mission. Obtaining and saving the vehicle is near impossible without resorting to modifications (i.e. Andromada), except if obtained using cheats (i.e. Turismo Cheetahs).
Special Vehicles in The Ballad of Gay Tony - Grand Theft Wiki, the GTA wiki
Description