I have a 2008 Roadster 1.5 (VIN 304) and the last couple weeks it just started making a clicking noise coming from the front of the car while I'm driving. It sounds like its either deep in the dash or under the hood. The speed of the tapping increases as the speed of the car increases. I've checked around the tires, and the dual fans under the hood and don't see any obvious obstructions. It's a plastic on plastic sound. Any ideas? See YouTube link: