Had to work today (Sunday). Showed the roadie weekend warriors how bike commuters kick butt on steel frames. Lots of disappointed guys on their high end CF road bikes.
Done that a few times on my Aluminium mtb with a steel rack and kid seat on the back. Nothing gets the roadies moving faster than when they see a 35-40 pound mtb with off road tires, racks, AND a kid on the back pacing them.
Of course when you start going up thats a totally different story,