If you're driving a vehicle at the time then the killer car will simply stalk your movements, and will eventually go away if you continue driving around without engaging it. If all of those points have been met, then the GTA Online Phantom Car may spawn near you at some point – it looks like the Declasse Tornado Custom pictured above, and although it doesn't appear on the minimap you will hear an ominous revving sound when it shows up. The in-game time must be between 9pm and 5am.You can be on foot or in a standard vehicle, but no weaponized vehicles, helicopters etc.You must have at least two players in your session, so solo play is out.