I got this one from
http://www.newministuff.co.uk/ it is a factory option in the UK from what i understand. I just buy the appropriate phone holder from ProClip that mounts to the stalk and wallah! It comes painted and ready to install. please forgive the horrible photos, but you get the idea. (ProClip makes holders for iPods, PDAs, and most every phone. The pics show my older Treo 180g, i've now got a Treo 600 in there.