Sorry if I missed this anywhere, but any news on retrofits of AWD? Somebody on the telsamotors.com message boards said they heard it it will be available. I have had my S for only 10 days and I decided not to wait for AWD because I thought it would cost a lot more and probably not be more efficient. For $4,000 I would have sprung for AWD, more range and more power for sure. I am hoping there is a retrofit for close to that price, that would be awesome. Thanks a lot.....and great to see Tesla relentlessly innovating!