The guy gets 100k out of brakes and tires. He must do all interstate type driving at low speeds. 450k out of a clutch seems to go along with that. I would be lucky to get 35k out of brakes around here. And even an experienced driver at best gets 150k out of a clutch.
Really any car can get that kind of mileage if you drive it a lot and are mostly doing constant speed interstate type driving. It is the stop and go and short distance stuff that wears a car out. I bet that car wouldn't last a month driving to work around here