I hope that Bugaboo Bee that just passed by you had a parent attached to it. The CPSC has issued a recall announcement for the 22,500 Bugaboo Bees sold in the US since August 2007 because of a possible brake failure. The company has received 121 incidents of Bees on the run after brakes on one or both sides disengaged, but no reports of injuries.
If you have a Bee, there's a repair kit waiting for you at the company. If you registered your stroller, it already has your name on it, and should be in the mail. Bees currently on the market already have the brake bracket installed.
In completely unrelated news, 22,500 strollers in 20 months, or 15 if you blot out 4Q08 and most of 1Q09, which I'm sure most retailers would like to do. Adjust your Harvard Business School cases accordingly.
Bugaboo Recalls Strollers Due to Risk of Brake Failure [cpsc.gov]
Bee Service Request Form [bugaboo.com]