I spotted a rare breed today - a non-upright cyclist commuter. I see the odd one on the weekends, being ridden for sport or pleasure, but only rarely do they venture out onto the roads during working hours.
This bastard was quick though. I had a hard time catching him and keeping up, and his action seemed to be so effortless and smooth. He hardly seemed to be working at all, whilst I was building up a nice case of sweat and puffing.
Whilst I like the idea of them, I prefer sitting up a foot or so higher and being able to see over the traffic. That's just my thing.