last summer I did about 20 radio interviews, I would have to say that the interest grew as a result of this thread. unbelievable. And the very first question each radio interviewer asked was, "is it street legal". Of course after the tenth time, you find yourself wanting to answer that question with "what do you think?", or some smart alec thing. But.. I didn't.
Street legal varies from state to state. But if you look at some of the cars in some auto shows ( the "Zephur"). You would wounder how that car can be allowed on the road. On any road, but it is. That car has a ride height of about 2", and a window about 9" tall. And it handles worse than a row boat.
One topic I tried to get radio interviewers interested in is the aspect of safety in a tumbler. The tumbler is 9' wide, so there is not much chance of it rolling. Some Jeeps are prone to skid rolling. top-heavy. The worst kind of crash in any commerical vehicle is a side collision at the drivers side. NO protection. Just a door about 6" deep, made of thin sheet metal, and/or plastic. Get hit in the drivers side in your volvo at 60mph. and you're dead. That door will be moved from your left side, all the way over to the passenger side. Now hit the left side of a tumbler at 60mph... you have 2.5 ft. of D.O.M tubular steel, with beams mounted in cross triangular patterns right next to your left shoulder. There is not much weight at the passenger part of the car so the car will be shoved(engine is in the back). Not much chance of another car getting to you. More reinforcement than a circle track race car. Very tough for another car to break through that kind of bracing. Or would you rather get hit from the side while riding in a volvo. Or a corvette perhaps. I was at a auto yard looking for parts, when I happened upon a ferrari that got hit on the drivers side. NO way the driver survived that. And I also noticed how easily the fiberglass broke because they vacumn bag the body parts to keep it light, low resin to glass ratio. As far as impact resistance, the body is a joke. You could see the fiberglass was dry in the middle, the resin never got to it. hence fairly weak.
And I can go on, and on.....