couple of questions: 1. is the frame the canvas on detachable and how strong? (considering one might make a good campervan). 2. what's the mpg? 3. how well suited are they to someone that's 6' 3"? (to drive as well as to lie in if someone made a roof box extension on top that went as far as the windshield to the back tailgate would I fit?). 4. do these have a keyed ignition and how secure are they against theft?
