So, for those three being belted in is what got them killed as they were pinned and crushed to death.
My dad had a truck roll over and land on top of his car. It was the biggest one piece box truck made. Crushed the roof right down to the hood and trunk. He dove down and all he got was cuts on his left knuckle when the windshield came down on the steering wheel with his hand still gripping it. If he had a seat belt on, he wouldn’t have been able to dive down like he did, especially if it was a shoulder belt with his left hand still gripping the wheel. Could have been bad. I’ve got 8x11 glossy photos of the car because a photographer happened to be there and he sent them to my dad. 70 something Plymouth satellite hard top. If he was in a little car, he’d have been screwed.