200 lbs <img src="/forums/images/graemlins/scared.gif" alt="" /> thats it?

so how can a rig stay on its top with a rollover and not instantly crumple? or why when i was sitting on my roof didn't the truck pooch? i guess it would put strain on other things, like glass.... i know i have a crack in my windscreen and once with a heavy load and a bump it got bigger in front of my eyes....

jeez- i was hoping to be able to atleast be able to stand on my rack, but i am 250 lbs + 50 lb rack = ?????????? <img src="/forums/images/graemlins/barf.gif" alt="" />