Yea, the tractor bit is the best. It had me laughing out loud here at work.
But seriously; I say we take up a collection and get that MTB rider on a decent road bike and then watch him blow Mr. 600Durace into the weeds.
I ride a single speed. Does that mean I have just one watt... or what? Anyway, I'm no slouch, but I've been surprised on more than one occasion by day laborers riding 35 lb Walmart mountain bikes in denim jackets and work boots. Sure, I might have been toward the end of a 40 mile ride, but these guys can throw down some watts of their own. Perhaps thats because they ride because they have to, not because they want to.
DanO