Yes there is a fence, it is on the side of the road away from the runway. In my estimation comparing the fence height to the small white car and the dark SUV, I'd say the fence was about 4' to 5' tall. Without being there and seeing it in person we can not tell how far the plane missed the fence. Video does not provide depth perception. The video does show he dropping just before hitting the car, but at a normal rate to my thinking. As you approch the end of the runway you kill the power and let the plane settle onto the pavement. Looks like that is just what he did. According to the written statement there is a sign on the road saying "Stop For Approaching Aircraft". The driver of the car failed to stop. The woman passenger statements indicate to me that she was totally unaware of the plane approaching, yet there it is in the video. The people in the SUV failed to look for approaching planes. Airplanes can't stop, cars can.
The white car crossed in front of the plane, but was clear before the plane got there. The dark car hit the plane. Both cars should have stopped. The pilot can not see the area directly in front or to the right of him due to the engine cowling. The pilot in this case would not be able to see the car at all. He would be sitting on the left side of the airplane, and anything approaching on the ground from the right would be out of his view.
The local air strip I fly into has a road around the end, just like that one. The road is used only by flyers to reach the back side of the runway. There is a sign there as well, saying "Stop For Approaching Aircraft". Only flyers use that road and they are aware that they are encroaching on the airspace at the end of the runway. I don't come anywhere close to the end of the runway, but then I fly an Ultra Light, and can land in a matter of feet. When I fly in there with Jim in his Super Cub, we don't come close to the end of the runway. We sit down about the middle and stop within 100ft. In Norm's Taylor Craft, we do come close to the road. Norm lands a lot faster than Jim and I do. When a loaded 206 comes in he is right down there almost touching down on the road. He needs all the runway he can get. There is a soft spot 2/3s of the way up the runway, and he wants to be slow before reaching that area. During the winter when most planes are on skis, everyone lands close to the end of the runway. Ski don't have brakes, you just coast to a stop.
As both a flyer and a driver, I have to place all the blame on the driver. The pilot was coming in to an area where he had the right of way over ground traffic. The car was entering the plane's airspace by crossing at the end of an active runway. Luckily, no one was seriously injured.