A "quick" update on the situation.
I figured I could change character and run all the way up just to move the truck. But playing with multiple characters seem to be a bit wonky in this game.
So instead of actually giving me the other character, it logged me back in as my main character for my LAN server. The truck was gone and I seem to have logged in were I were supposed to end up when getting out of the truck.

Got stuck in the M3S Covered truck.