His Web site is here, the linked page containing some biographical information. Michalek lives in Utah, but was born in Argentina and claims to be self-taught. His passion is old Volkswagens -- usually Microbuses. But he paints locomotives and other transportation objects -- and even does people.
Below are images of his paintings that I grabbed mostly from his Web site.
A Derelict VW Microbus.
I remember this from the show. It's fairly large, giving Michalek room to paint both tightly (the Baltimore & Ohio diesel locomotive) and freely (the background).