APPROACHED GATE ACROSS DRIVEWAY; STOPPED 2004 DODGE CUMMINS 2500 TRUCK, PUT IN PARK, OPENED GATE, PROCEEDED THROUGH 12' GATE. PULLED TRUCK FORWARD TO PROVIDED ENOUGH ROOM FOR GATE TO CLOSE; PUT VEHICLE IN PARK ON LEVEL GROUND. EXITED MY TRUCK, IT WAS STATIONARY, WITH NORMAL IDLE. WALKED PAST THE REAR OF THE TRUCK TO CLOSE THE GATE. HAD JUST LATCHED THE GATE WHEN I HEARD A CLICK THAT MADE ME RAISE MY HEAD AS I WONDERED WHAT THE NOISE WAS. THEN THE ENGINE ROARED IN ACCELERATION AND THE TRUCK FLEW BACKWARDS TOWARD ME. I MOVED OUT OF THE WAY, THE TRUCK HIT THE CLOSED GATE, CRASHED THROUGH IT, PROCEEDED IN REVERSE DOWN THE DRIVE WAY APPROXIMATELY 10 YARDS, VEERED OFF THE DRIVEWAY THROUGH 4 CEMENTED FENCE POSTS AND HORSE FENCING BOARDS THAT ARE 2X6 (VERY SUBSTANTIAL BOARDS). TOOK OUT 2 SECTIONS OF FENCING BEFORE IT MET AN INCLINE IN THE PASTURE WHICH CAUSED THE RUNAWAY TRUCK TO COME TO A STOP. IF I HAD NOT HEARD THE TRUCK MAKE THE CLICKING NOISE WHICH WAS IT COMING OUT OF THE PARK GEAR, I WOULD NOT HAVE HAD TIME TO GET OUT OF ITS WAY. AFTER READING MULTIPLE OTHER SIMILAR INCIDENCES, I IMPLORE DODGE TO STAND BEHIND ITS TRUCKS AND RECTIFY THE SITUATION FOR CONSUMERS IN THE FUTURE AND THOSE OF US WITH FINANCIAL DAMAGES INCURRED NOW!!! *TR