I responded to an almost identical accident on I-95 north of Richmond. In that case it was a Mustang convertible stuffed under the rear of the tractor.

Circumstances were; the truck was stopped by road construction and the car hit him at full interstate speed, breaking off the rear safety bar. We expected to see the driver's head in the back seat along with the windshield and convertible top. He too miraculously survived with his head between two of the longitudinal beams under the truck bed. He had a broken arm and facial lacerations but was conscious and able to talk to us. We were not able to lift the truck (filled with bird seed) with airbags and crawled underneath to cut the side of the car out for extrication.

The Mustang driver was an attorney and was texting at the time. Imagine That!