This thrills my inner metallurgist. Over at Dinosaurs & Robots, they've blogged about a limited number of cars built with stainless steel bodies. They've been shiny for 70 years.
People don't think much about steel. Steel kicked off the industrial revolution in the late 1800s by allowing control over the balance between strength (resistance to permanent bending) and toughness (resistance to fracture). And that's plain carbon steel - stainless came later.
By the way, Mr. Jalopy over at D&R is a bit of a kindred spirit for me. He is, basically, ten.