I WAS STOPPED BY A ROAD CREW. THERE WERE 3 CARS IN FRONT OF ME AND AS I WAITED FOR THEM TO LET US THROUGH ABOUT 10 CARS WERE STOPPED BEHIND ME. I WAS LISTENING TO THE RADIO WHEN I HAD THE WEIRD SENSATION THAT I WAS GOING BACKWARDS INSTEAD OF BEING STOPPED. I LOOKED AROUND, REALIZED I WAS GOING BACKWARDS AND WENT TO HIT THE BREAK BUT MY CAR HAD ALREADY HIT THE CAR BEHIND ME. THE MAN IN THE CAR BEHIND ME TOLD THE POLICE OFFICER THAT RESPONDED THAT HE DID NOT SEE BACK UP LIGHTS OR ANY INDICATOR THAT THE CAR WAS IN REVERSE. I DIDN'T TOUCH THE GEAR SHIFT. THERE IS NO REASON FOR THE CAR TO GO IN REVERSE. THE PHOTO BELOW SHOWS THE DAMAGE DONE TO THE CAR MY VEHICLE HIT.