Yup the hitch works good.
That's not a 30mph rolling impact.
Personally friends with our local Trooper that worked a major accident identical to this one today. And sat 2 cars in line waiting for a directional officer to move traffic on the interstate about 5 miles from the house.
Explorer rear ended a semi traveling 40mph. She was doing 75mph. Semi truck had corporate GPS tracking. Explorer was driven a nurse with 2 other nurses on board.
Needless to say you cannot tell it's an Explorer anymore, except for the nameplate on the rear hatch.
However, every accident is different and will be interested in what the forensic evidence of the report says... if they take it that far.
I would agree to 10mph rolling collision.
On edit: I thought this was the pic of the car that hit tricktruck.... apparently not!!