A new Black limousine decor found under Decor / Sculptures, costs 0. Use cheat moveobjects on to place the limousine.
*** NB. This limousine is not compatible with game
as it removes any decor vehicle
Black limousine decor (MediaFire)
White limousine decor
PS. If anyone can make it drivable, please do, and send me a copy of the drivable version.