That’s uh... that’s not how that is supposed to go.
As the YouTube uploader notes, this was at the 2016 National Tractor Pulling Championships in Pull Town, USA. (That’s not a real place, it’s actually at the Wood County Fairgrounds in Bowling Green, Ohio.)
As you can see, this is what you’d call an “extreme engine failure.” More specifically it split the block and shot everything above the rods out of the truck, as BangShift pointed out.
I’m not sure I’ve ever seen an engine failure quite this dramatic, though I assure you ever one that I have personally experienced feels this bad.