In the 1960s, the British government built seven buses with movie theaters inside. Only one survives to this day, but it's been lovingly restored to its original grandeur. The bus can hold twenty-two people and is used by its owners to promote the cultures and arts of southwestern England.
http://www.moviebus.org.uk/gallery/ via DVICE | Image: Movie Bus
This is what's going on underneath:
http://coaches-aplenty.fotopic.net/p34591106.html
I'd dearly love to own it...
http://www.screenmachine.co.uk/