I ride in NYC and dont have a car anymore. Like some others, I use dual platform/SPD mountain bike pedals and think they are great. I ride clipped in 95% of the time. But on rare occasion, I can ride in regular shoes when needed including boots in the winter. I keep a pair of shoes at work so I don't have to carry a pair around. WIth the SPDs you can walk almost anywhere, regardless. Since my office is carpeted; sometime I forget I have the SPDs on and wear them around the office. I have a few pairs of SPD shoes including sandals.