EE HAD DRIVEN 1 COMPANY VEHICLE TO THE AREA WHERE OTHER EE'S WERE REPAIRING A GEAR BOX. THE EE EXITED THE CO. VEHICLE & WAS STANDING BETWEEN 2 COMP. VEHICLES. ONE OF THE VEHICLES BEGAN TO ROLL FORWARD A FEW FEET AND THE EE WHO HAD TRIED TO STOP THE COMP. VEHICLE BECAME LODGED BETWEEN THE 2 VEHICLES.