convelling the subject bach to RC's question I used to drive a pantechnicon. It was "pan-" because it would hold everything (especially furniture}: but why "-technicon"?

A word, invented as the name of a bazaar of all kinds of artistic work [see previous comment on pantechnic], which has (through the fortune of the building) come to be applied to a large warehouse for storing furniture, and also to be colloquially used as short for pantechnicon van, a furniture-removing van.
1830 Mech. Mag. XV. 393 Pantechnicon [Heading of Article, describing the building, in Motcomb Street, Belgrave Square, which was originally intended for a bazaar, and was afterwards converted into a warehouse for storing furniture].

hope you guys enjoyed yourselves on your bachanal.