I use to commute on my mountain bike (6 miles from home to my workplace) but a month ago, my brother and me bought two Yedoo brand kick scooters, we choose the model OX wich is fairly light and compact, with 16" tires.
It's a lot of fun to ride, and it reaches all places of our
city (Granada City in south Spain) it's a medium city, population 300.000 and about 5 miles from side to side.
We've found this kick scooter is great for personal transportation within the limits of our city size.
Here'a a
video we made this morning doing some errands downtown. Enjoy!