[zenir]

Clicked it because no idea what RVs are: Recreational Vehicles, meaning vehicles with fancy interior, e.g. kitchen and so on

[dTal]

Ridiculously generic name. Skateboards are also recreational vehicles.

[stephengillie]

An RV is basically any bus-sized living space which has its own engine. They usually range from 20 feet to 40 feet, and frequently require the same restricted Class B driving license as a city bus.