Most likely what happened. We had a similar accident 3 miles from here last summer. At the foot of the mountain I live on, is an abrupt left turn (with no dedicated turning lane,) leading into the National Forest, to a series of beautiful reserviors used by daytime boaters. A guy with a boat in tow was stopped, waiting to make this left, when an out-of-stater slammed into the boat trailer at about 50 m.p.h., shooting the boat over top of the tow vehicle and it slid a good 100-150 feet before stopping in the middle of the highway. No serious injuries thank Goodness, but made a mess out of all the vehicles, and changed everybody's plans for the weekend. It ended up at the service station where my boy once worked, and the boat wasn't in too good of shape, trailer was shaped like a "U", there was packages of hotdogs, buns, charcoal and exploded beer cans everywhere.:drinkup