Ooh! I like it.
And you're right, Sam, but the optional tracks offered back in the day were steel, and who would want to road a machine on that? I imagine steel tracks weren't as gentle to fields, either. I don't think tracked combines will ever be a big seller where I'm from, but we don't harvest in the mud. It looks like a good system for you guys that need it, though.
edit: I just noticed the European-style augers on the outside of the corn head. Neat.