Rattle at 65 mph??
 

I have an annoying rattle that sounds like something plastic coming vaguely from the passenger side of the car when I hit 65 mph. Seems to be independent of gas or brake, but stops soon as I slow down under 65. Any ideas? Thanks
2007 boxster

Wheel bearing? Under pan?

I'd concur with some plastic bit flapping around. Jack it up and start wiggling stuff from underneath the car.