I spend a lot of time on my phone in the car, and so I have to deal with poor sound quality issues. I don't sound great on the other end, I have to about to get over road noise, Siri is basically non-functional, etc. so I would like to upgrade the microphone. But I would like to keep the general integration with the car stereo -- using the speakers for voice, having controls on the steering wheel, etc., ideally just with a better mic.

Has anyone solved this problem yet?

 

I still can't get Siri to work with my '11. It could possibly be an iOS 7 beta bug, but I'm not sure. I generally don't get complaints from callers on the other end.