I like the bit about the latest caravans being lighter so that modern cars can tow them. Last time I looked, a large number of full size caravans are being towed by big SUVs, which are probably three times more powerful, and heavier than the typical 1970s tow car. My dad used to pull a heavy, wooden framed Sprite Major with a 1700cc Morris Ital estate. How we ever made it to France all those times is completely beyond me.