I got the feeling from the reactions that at least half of them - especially the guy with the camera - knew exactly what was going to happen and were just letting it play out as an object lesson.
The rock could never be moved. The truck is still there, as a monument to their hubris. Millennia will pass and it’s lesson will be long forgotten but the truck and rock will remain, standing watch, waiting.
Zing. The site I found this on estimated the boulder's weight (guessing that it's sandstone) to be around 4000+lbs. It would probably do the same thing to a full-sized F-150.