My hat is off to you SF riders. Between the traffic, one-way streets, trolley tracks and steep hills to park on it seems pretty intimidating to me. But that's just the opinion of a Sierra foothillsbilly.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." -- Douglas Adams, The Hitchhikers Guide to the Galaxy