It's also the second Wednesday of the month, meaning that it's a no-drive day in Boulder.
City officials encourge all to walk, bike, car pool, telecommute or take transit to work.
You can also ride the HOP shuttle for free Wednesday. The giveaway will be from 11 a.m. to 2 p.m. on the Boulder County Courthouse bricks, on the Pearl Street Mall between 13th and 14th streets. Paper bags will be provided.