Sometime when you are at the track look under one of these mods and you will see how complex the suspension is. If one piece fails something like Krupp's accident can happen. It's still not the worst mod wreck at Terre Haute. My cousin Travis Shoulders still holds that record. He flipped in about the same spot, went about 20 ft in the air, landed halo first into the concrete wall, and ended up in the grass on the other side of the wall. His helmet cracked and the car was absolutely destroyed (almost worst than Krupp's), but he was racing the next weekend. I think open wheel chassis builders could learn a little from the mod and late models, strickly from an engineering aspect. Sprints need a crush zone and to protect the driver from the environment more. Sprint drivers are safer than ever before, but there is always room for improvement.