I ride a Beach Cruiser Bicycle to work. It isn't this brand but similar to;

http://justbicycles.com/bike_details...-Beach-Cruiser

it is about 4 miles to work and I leave early enough that timing is never an issue. As to the ride
itself it is the best part of the day. Sure I'm passed by the MTB types but I have choosen the
relaxation over timing. Occasionally, I hade the evening drive but rarely.
Also, where I live in Dallas it is almost completely flat terrain. But Beach Cruisers
also come in three and seven speeds so that should not be a problem anyway. If
you are like me you will love riding your bike to work.