As the "pain in the pump" stories dominate the news, join me on a bike ride through downtown Atlanta as part of the monthly Critical Mass. Riders assemble on the last Friday of every month in cities all over the globe as part of "a worldwide movement to promote the use of bicycles as a viable means of transportation." Though the flavor of CM rides varies from city to city, here in Atlanta the riders don't seem to meet too much resistance. Is the soaring price of gas promoting their movement?