Ottawa, ON, Jul 23, 2012 — All over Ottawa, you can spot clusters of red bikes parked on street corners. They're known as Bixi bikes; it's a bike-sharing program that's supposed to make it easy for tourists to get around the city. There are 25 bike stations all over the dowtown area. And the same model is used in Washington DC, Boston, Toronto and Montreal. But as reporter Karen Kelly discovered, there are a few challenges to mastering the Bixi bike experience.