1910s
One of the first RVs in the US was made from a Model-T Ford Roadster in 1915. The vehicle, which is now on display at the RV and Motor Vehicle Hall of Fame in Elkhart, Indiana, consists of a "telescope apartment" with a bed built on to the back of the regular car.

While it was small, this space was perfect for drivers who were making long trips and needed a convenient place to sleep.