I already have a working urban transport. I regularly ride a Xootr scooter (http://www.xootr.com/) for a working commute of about 2.5 miles, mostly on flat terrain. It takes 20-30 minutes. I can take it into the gym and fit it in a half-height locker.
Caveat: It reacts poorly against upward elevation - parallel cracks like those between the gutter and the bike lane are likely to throw you. I got a stitch in my knee from exactly that situation. I stay on the sidewalk now.
Caveat: It reacts poorly against upward elevation - parallel cracks like those between the gutter and the bike lane are likely to throw you. I got a stitch in my knee from exactly that situation. I stay on the sidewalk now.