Commuters take a very different tube to work

If someone in London told you they were taking a tube to work, you wouldn't think much of it. But in Boulder, Colorado, the phrase comes with a whole different meaning.

The city’s eighth annual Tube to Work Day saw approximately 200 tubers take to the creek for their commute.

Commuters tube down the creek, and get off at the 'stop' that is closest to their workplace.