This happened to my GN trailer. I was parked on the street and about midnight this young guy came ripping down the street. He hit my GN flatbed in the rear at about 60 mph and that pushed the trailer into the back of my truck, breaking off the GN. The trailer hit my back window and bent the back window sheet metal, broke the glass and ruined the bed. The damage to the truck was $10k. The Trailer was hit in the L rear and the car disintegrated (Mazda 626) which ended up under the trailer bending the rear 10k axle. The damage to the trailer was $10K +so I had a loss of $20k His insurance was only good for $10k from AAA. I lost use of the trailer for 2 months for repairs as they had to order a new axle. Not a fun time.