Nothing says reinventing a franchise quite like admitting to the world that you have a fetish even the truckers of America aren't paying for in Walmart parking lots. Now give this so many views, The Rock won't be able to turn down being in the sequel.
They've been hauling 10 tons of Chinese door frames across the country for about 8 hours straight and the nicest thing these guys have seen so far is Esther from IHOP. So, I can't really blame them much for their behavior.
It's funny, after a while you realize they are just like normal people. Only totally insane. Prolly from fapping over and over everyday, hours on end for sophisticated gentlemen like "BigDickRick", "TruckerSteve", and "NarutoFan76".