I only have commuting experience in one city, Memphis. It's pretty good and getting better. I'm able to get around all over the place -- downtown, midtown, east Memphis, and out to the suburbs -- with no trouble once I figure out a good route. I use a greenline to get out to the burbs and city streets for everything else. I can usually plan a route that avoids the main arteries by wiggling around in residential areas. We're getting more and more bike lanes. One of the main roads that I use, Cooper, doesn't have bike lanes on the part I ride, but it is wide enough that cars give me plenty of space. On top of all of that, I've found most motorists to be very polite. I've been very pleasantly surprised by how easy the transition to using my bike as my main mode of transportation has been.