I used to go watch alot of truck racing back in the 80's and when they crash they do some serious damage.
I do remember one race at Brands Hatch when it was stopped early because a truck hit the pit wall just before the start finish line. To entertain the crowd whilst reparing the wall they brought out a pretty awesome truck that could do wheelies of all things. So off the guy went down the start / finish straight suddenly deciding that he might not clear the bridge up on two wheels, dropped it a bit to rapidly lost control speared left into the barrier causing even more carnage ending up on it's side. Busy day for marshalls and repair work that.