This is how car called Cheetah evolved during the GTA games.
Cheetah is one of the fastest car in Grand Theft Auto series games (I think that it was the fastest in GTA 3). Cheetah from GTA III, Vice City and San Andreas is based on real car Ferrari Testarossa. The one from GTA V is completely different.
First appeared in GTA III:
Then, there was a huge lifting in GTA Vice City:
GTA San Andreas
The one from GTA San Andreas looks pretty similar to VC Cheetah:
As far as I know there wasn’t a car like Cheetah in GTA IV.
Very famous screen of GTA V: