"Mechanical Sex Machine" This machine was made out of the same hard stuff that children's horse and car rides are made from. It is a coin operated machine that "humps". At the time it was in service it cost 100 pesetas which was the Spanish monetary demonination prior to the Euro. Even though this was in a museum, the machine was plugged in and they even had a fire extinguisher nearby in case thinks get too "hot" to handle !