I felt like I'd just seen a flash mob, or had been involved in an experiment to test my threshold for body odor.

It was a few months ago at Malone's Pub on a Sunday night, and my pool game was suddenly interrupted by a rambunctious group of sweaty, smelly and loud people. The bar was soon overrun by them, to the point where I couldn't get a drink for about 15 minutes. And then, in the blink of an eye, they vanished like a fast-moving storm, leaving only a few empty bottles in their wake.

What just happened here?

The bartender told me that it was a bicycle pub crawl that met every Sunday and rode to different bars...

Fort Worth is one of a growing number of U.S. cities that has adopted a more progressive bike plan and started to take bicycling seriously as an alternative form of transportation.