Yep, I know that, saw someone rip the guard off the front of their rodeo in NC, tried to warn them....but they wouldn't listen.
As far as making my hoop "structural", I dunno, if I drove around worrying like that, I would never move it out of my driveway, if I get into a front end collision with something big enough to get up that high, I am screwed and it is totaled anyway.
ALthough it would give me a reason to get a 12ton press to bend tubing with.....my garage is starting to look like a metal shop.