The AP Reports that Senator Obama did go out as planned on a bicycle ride with the wife, children and friends. Photos show the helmeted Senator riding in casual clothing with what appears to be a trail-a-bike attached.
In casual clothes and on a hybrid city bike, Obama shows biking is an easy activity you can do by just rolling out your front door. You don't need spandex (ahem, John Kerry) or a fancy full suspension mountain bike
Note that the Bicycle Coalition does not endorse candidates and as soon as Senator McCain brings bicycling into the 2009 campaign you will read it here first.