For a 55mph impact, it seems the Jeep held up quite well and obviously protected you.
My first and only accident was running off the road at 80 mph into some rather large trees in an Infiniti Q50. I should have died based on the damage to the vehicle but all I had were bruises and a fractured rib. Modern cars truly are something when it comes to safety!
I bet they total it, but someone will buy it, repair it, and sell to a buyer that doesn't know or care what a salvage title means.