My company started a "green" campaign last year. They sent out emails, put up posters in the breakrooms, gave away green coffee mugs (as an alternative to styrofoam cups in the breakroom), even set up green committees at each site to collect green tips for a contest. The posters listed: carpool, maintain your car, and use public transport as green alternatives. No mention of riding a bike to work, so I had to graffiti the poster with a bike and "ride a bike".
I sent an email to coporate (In Dallas). The reply was "hey that's a great idea, we should put that on the poster next year".