WE HAVE A 2005 TOYOTE SIENNA MINIVAN..THE LAST ROW HAS A MIDDLE SEAT BELT THAT HANGS VERTICALLY TO A CLIP THAT THEN CAN SWEEP ACROSS THE MIDDLE PASSENGER TO THE ATTACHING BUCKLE. THIS VERTICAL PART ALSO RETRACTS INTO THE CEILING WHEN NOT IN USE. AFTER DROPPING OFF OUR MIDDLE PASSENGER - MY SON WHO WAS SEATED ADJACENT TO THE MIDDLE SEAT WRAPPED THE VERTICAL HANGING SEAT BELT AROUND HIS NECK. IT IS DESIGNED TO RETRACT SO IT STARTED CHOKING HIM. BECAUSE THE SEAT BELT IS ONLY UNLATCHED WITH AN ITEM SMALLER THAN MY FINGER I HAD TO LEAVE HIM TO GET A PEN FROM THE FRONT THAT WOULD RELEASE THE SEAT BELT. A NEAR MISS.