[Mr70]

Looks like the trailer was parked along the side of the road,and a moving car or truck side swiped it.
The initial point of impact looks like the D/S corner of the back door.
I'd guess that old 1/2 ton truck was inside the trailer ahead of the charger too.
Late winter into spring looks to be right.Maybe on his way to/from an auction.
Someone should run that Chargers Texas plate to find out what really happened...