The £5,500 QTvan is the world's smallest caravan and is designed to be towed by a mobility scooter along the pavement or even inside a supermarket. It is perfectly suited to queuing overnight. The QTvan is so named because it caters to three peculiarly British obsessions: queuing, tea and caravans. As well as a 19" television, a drinks cabinet and even boasts tea-making facilities.