From time to time KCers ask about retro caravans and low weight caravans. Take a search of a Cabana caravan. They were built during the 70s and have a fiberglass pop top and fold out fiberglass end pods. The pod is "connected" to the pop top - as you pop the top, the pods go out. And they only weight around 700kg. (perhaps the bigger ones get heavier) Here are some on Gumtree http://www.gumtree.com.au/s-cabana caravan/k0 they have a facebook page https://www.facebook.com/CabanaCaravan/ A colleague at work just sold one - which gave me a chance to look them over. I gave it some thought, but I have no where to put it. I do think they would be a good pairing to a bay, with white fiberglass and the aluminum panels colour matched to the car! You could end up with the same year vintage.