Wow cool, i wonder why Rockstar deleted it, btw, i tried replacing it with the Bloodra and it has some serious issues, some textures were sticked in the widescreen, the grill and the doors, but well, that is not your fault, it was already that way in GTA SA, and it also has an exagerated crhome all around lol, and i noticed that the taillights have the texture from Vice City, (as so as the decales) but well, we donīt know why R* made it that way, maybe just for fun
I think that R* just used older generation cars to test GTA SA.
Just look at the beta screen of the CJ arrest.
There is a VC taxi too.
And here the VCS.
I seriously believe that R* just used VC / VCS cars to test GTA SA.
This hidden vehicle is an edited version of Vice City's from the early development of SA. It was also used as a temporary test vehicle used by Rockstar to test their scripts for the Bloodring Banger event/race.