NSTG8R
Elio Addict
That's what I was told the body panels would be made of, a "fiberglass composite", incorporating fiberglass and plastic. Very rigid and impact resistant. To tap on the body panels, it feels very solid and thick. Doesn't sound hollow or thin at all. A very good choice for body material.
My favorite thing about the SMC panels, living in the "rust belt", is it won't!