Generally speaking, buses are pretty bland to look at. So what better way to brighten up the scenery while dumping a truck load of your advertising budget back into the economy? Protip for the transit advertisers. You should draw two legs, and have the bus doors be a vagina. I’m not sure what you’d be selling, but it would defiantly get my attention. Douche? Condoms? A book on Keggle exercises? The ideas are endless.