Decades of research, innovation, crash tests and rule changes have been put into improving safety in head on collisions. It’s not like you’re the first who wonders what will happen with engine block. It’s designed to go down.
Although I don’t know about American trucks. I think they are meant to wreak havoc on every single person involved.
My neighbour designs the crumble zone on Volvo's heavy duty trucks. They at least spend a shit ton of effort (continuous, multi-decade) on making anything hit by the truck having as little effect as possible (at least).
Quite a challenge with heavy duty trucks shipping tens of tons of stuff, but anyway.
Although I don’t know about American trucks. I think they are meant to wreak havoc on every single person involved.