The brands of cars within GTA are not direct parodies and leave a a lot of room for ambiguity. The phones in the game are ifruit;apple, drones;android etc... However the subtle jabs they do on certain classes of cars will leave memorable impressions (e.g. when jimmy is being postured to buy a "real man's" suv instead of a tax rebate hybrid). Never underestimate the power parody can have on someone's perception. There is a reason there are tons of comedy shows posing as "news" when dealing with politics, social issues, religion etc....