Hi Richard, we use the smart behind our motorhome, this is the 2nd smart we have had, the first was a 2006 and it was great, this is a 2011 and was rubbish from the start, first the lights did not work, then the belt went when we took a day trip to switzerland, called out smart who got the car taken to a smart centre then we heard nothing, 37c all day the shops did not take our bank cards and it was a sunday, went to the smart centre on the monday and they had done nothing with the car, after lots and lots of blue words I got them to look at the car and was told it needed a new engine, and could take a week to fix, after lots more blue words got a replacment car and went back to germany, smart was total rubbish and did not help us at all, so this will be our last smart. I loved the car but just can,t trust it any more. I checked smart forums and a lot of new smarts are reporting the same fault from the stop and go system. michael