Sudato,

To chime in on Bruce's excellent recommendation, I also own a single speed Dahon and would highly recommend it for the last mile commute. The Speed Uno is cheaper than the Mu Uno and for the kind of riding you'll do for a mile or two, it is fine. I added a cheap Diacompe front brake (for emergency stop in the city), a front luggage rack, PowerGrips pedals, a rear Arclite rack which was on my Dahon Mu SL when it got the Burley trailer hitch and a set of fenders. Despite the fear that you'll need to be either Alberto Contador or Lance Armstrong to ride this bike, the gear inches on both the Mu and the Speed Uno aren't all that super high. The advantage you've got with smaller wheels is that they accelerate a lot better than bigger wheels, giving you a slight plus going up a modest hill. My commute in Vancouver isn't flat and consists of several challenging hills as well as a mile long commute along the water that always blows a headwind on the way to and back! Sigh! Despite that, I really enjoyed this more than my Mu SL especially the coaster brake!