I HIRED THIS CAR FROM THRIFTY RENTAL CARS, AND WAS IN A COLLISION ON THE I80 FREEWAY, WHEREIN I HIT THE VEHICLE IN FRONT DURING STOP-START TRAFFIC, I WAS TRAVELLING WAY BELOW THE SPEED LIMIT. THE SEAT BELT DID NOT HOLD ME IN PLACE, AND I FLEW FORWARD OVER THE STEERING WHEEL, AND HIT THE WINDSCREEN. I SUFFERED MILD CONCUSSION, WHIPLASH, AND BRUISING DOWN THE FRONT OF MY BODY. I MAY HAVE ALSO PERMANENTLY DAMAGED MY NECK. I HAVE REPORTED THIS INCIDENT TO THRIFTY, BUT THEY ARE REFUSING TO TAKE ANY ACTION.