I managed to spectacularly crash (read Duckbill) a 73 vega wagon into the ass end of a semi tractor parked alongside of the road in 1982.
Seat belt (who put that on my drunk ass?) broke my sternum, severely bruised my heart, collapsed a lung and snapped several lower ribs, my back & several other important things..
My GF found me in the hall way of the ER on a gurney with my tee shirt still on (and nothing else) knocked the fuck out ~ and they discharged me after stitching up my eyebrow.
So much for the "economy" hospitals in Louisiana.
I was lucky to make it out alive !