i bought one of those .when i went to look at it ,the back was full of crap .paid 400 quid ,emptied the back and found a great big hole in the roof and the floor was concrete . worked out a builder had a mixer in the back and the hole was for the exhaust .the outriggers were rusted out so he'd added rebar ,chicken wire and concrete as needed. in places it was about 8'' thick . after fixing all that ,i fitted it out,used it a bit then flogged it to a mate .
who tipped it into a ditch in France.he said he came to,cold and wet ,lying on the ceiling in a stream which was coming in the broken windscreen and out the back doors . after recovery ,it started no probs and off he went with a temp windscreen . i think you had to lift the accelerator pedal with your toe to stop the engine