The attempted burglar is shown trying to break the windows of the station itself. When that didn’t work, he took to the truck.
This went on for several moments as the man repeatedly tried to break the truck’s window with the end of the mop.
He even goes so far as to take a running start with the mop toward the truck window. Ultimately, the man gave up on the truck and turned toward trying to break into the station, where he falls & ends his troubles.