Plastic...
We bought a new Jetta TSI this year.
The thing is full of plastic. I (used to) work in oil & gas and guess where a large amount of that natural gas goes....into making plastic.

The auto manufacturers love it. It's lighter than steel, doesn't rust, is easy to form into parts, and it colors well.
Actually, most low to mid level cars are loaded with plastic. There was a time when a car's dashboard was made of steel. Now pretty much all dash shells are expand polystyrene. Coffee cup material without the blowing agent.
I understand the Tesla has a lot of plastic in it too! Correct??
And yes, GM would rather sell you a truck as would Ford, RAM, Toyota, Nissan, and the others (except Hyundai/Kia)