The Declasse Vigero ZX Convertible, a two-door muscle drop-top returning from GTA Online's The Chop Shop update, is due to appear in Grand Theft Auto VI. A gray example, seemingly with revised details, was spotted driving along Vice-Dale County Road 561 in La Perle in an official screenshot of Vice City.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.