Have you seen the 2009 Soho?
http://www.trekbikes.com/us/en/bikes/urban/soho/soho/

It looks like the ultimate commuter bike to me:
- belt drive (no grease) with cover
- 8 speed internal geared hub
- roller brakes
- flat bars (great for high traffic commutes)
- 700c wheels with reflective puncture resistant tires
- aluminum frame (great for winter commuting)
- fenders
- a bumper on the top tube to avoid scratches on those nasty bike racks

In other words next to no maintenance, which is my ultimate goal in a commuter (as well as a comfortable fast ride). It just needs a rack, some lights and it's good to go. The price tag isn't that cheap, but for all those features it seems worth it. On the other hand I have yet to test drive it (has anyone?) and I have no experience with belt drive bikes (how long does the belt last and can you change it yourself like a chain?).

Thoughts?