I'm a natural born Texan. I don't believe in the words "It can't be done."
I've already nixed the idea of using a tricycle gear. It would be under 8.5ft and I'm an experienced auto builder. It weighs under 3,000lbs right now. I plan to have NO normal heavy motor home stuff inside-shower,toilet, gray water tank etc. It would be a large hollow panel truck. I rarely leave the state, so I'm not terribly worried about the police or DPS troopers doing searches. A friend of mine drives a Jeep daily with a replica M2 Browning on a mount. I don't think he has ever had trouble because any rational cop can see that he isn't a terrorist. I suspect most police would be wise enough to realize that this thing isn't really a fully operational bomber going down the road. And if I get one that does think it is, then I will have one more story to tell about having guns pointed at me. But, I do value your points.
I admire your attitude, and wish you the best.
I think most cops would assume the vehicle is not an VIED, but would stop you just to satisfy their curiosity. They will probably call it in as a possibly heavily armed vehicle and ask for back up. Remember that guy who stole a tank and went on a rampage? or the Killdozer incident? I'll bet most cops have those images burned into their brains.
Good luck and keep us posted on progress. Your fabrication skills are impressive. If you were closer, I could do most of the sheet metal work myself.
Okay, I just gotta ask...
why in the world would McDonalds want a theme car based on an old shoe?
Trying to say their burgers are as chewable as old shoe leather?