While it’s a no brainer that a big truck vs little car will go in the trucks favor, you are nearly twice as likely to get killed in a single vehicle crash in a truck or large SUV. You hit a car, that car becomes your crumple zone. You hit a solid wall, your very solid frame becomes your crumple zone and you become a pre-scrambled egg in a lightly damaged shell. Modern cars have crumple zones and 100 different ways of keeping the energy of a crash away from the occupants. A solid frame makes that nearly impossible. Dad used to say that the hardest part of fixing a vehicle after a fatality isn’t the body work, it’s getting the blood out of the interior. He’d seen fatalities that only had a pushed in bumper and a slightly crunched fender.