Anybody know what's the deal with riding on the sidewalk? Here in Jax, FL we have SOME bicycle lanes, but I gotta tell ya, they don't exactly instill too much comfort considering that they are only about 3 feet wide, right next to a road where people usually drive about 20 over the speed limit. I'm a little wary of having my back facing 60mph SUV's that are passing me by about 3 feet.

Now, I am a newbie so maybe it's not as bad as I make it out to be but I'm a little worried about being forced to ride in that itty bitty lane in a city that's not exactly bike-oriented. Any suggestions? Are there major fees associated with riding on the sidewalk?