WHILE REVERSING TO HOOK BOAT TRAILER UP TO VEHICLE, VEHICLE TOOK OFF AT A HIGH RATE OF SPEED IN REVERS. HITTING THE BRAKES DID NOT HELP. THE VEHICLE SLAMMED INTO THE TRAILER WITH BOAT SITTING ON IT AND PUSHED INTO A TREE BEFORE THE VEHICLE WOULD STOP. FURTHERMORE, THIS VEHICLE HAS BEEN INTO THE DEALER'S 5 TIMES FOR HEADLINER ISSUES WHICH INCLUDED INTERIOR LIGHTS NOT WORKING, REAR AC VENTS NOT WORKING, PINCHED WIRES IN THE WIRING HARNESS AND AIRBAG LIGHTS ON.