Photographer Jonathan Foster recently experienced Critical Mass in San Diego and took some pretty rad photos.  For those of you who don't know about this bike riding phenomenon yet, Critical Mass is the gathering of hoards of cyclists at the Balboa Park fountain at 7pm on the last Friday of every month.  From there, they embark on a ride through the streets of San Diego letting their presence be known to motorists, pedestrians, and this time, Comicon attendees. 

For more of Jon's photos from that night, visit his myspace

For more info on Critical Mass click here ..or e-mail me about meeting up next month! -carly

Here is a video I found on YouTube..