What To Do When the Bicycles Take Over Our Roads With the Marin Century bringing 2700 more bicyclists to West Marin this Saturday, it's a good time to consider how cars should deal with bicyclists - the considerate ones that ride single-file, and those that travel two or three abreast. George Clyde interviews Marin Century Director Doug Henningsen and offers some of his own techniques: "Car back!" Century traffic information here.