"Gay Car" is a porn video tag that has two main meanings:
1. The term "Gay" refers to homosexuality, indicating that the content of the video involves sexual activity between men. In this context, "car" does not specifically relate to a vehicle but rather could be interpreted as an abbreviation or slang for the male genitalia, more commonly known as a "cock". This tag suggests that the video features gay male pornography focusing on oral or penetrative sex acts involving the male genitals.
2. Alternatively, the term "Gay Car" could mean that the scene takes place inside a car and involves homosexual activity between men. In this case, it would describe a specific setting or environment where the adult content is taking place, with both aspects of the tag being relevant - the sexual orientation of those involved and the location of the act.