On the last page of the magazine is an article relating to a "green" caravan. I read and accepted the article with the humour intended as I took it as being an April fool's joke. However thinking about it there could be an idea here. Why cannot the caravan wheel be driving an alternator by means of a belt, which in turn could charge the battery and also keep the fridge cool. This could help keep the battery topped up for site use without EHU. Just a thought. MY IDEA SO HANDS OFF PLOTTER - better than a "smokealoo"