Registered to comment this issue.

Had older Nokia phones, and all of them were connecting with my cars (Toyota and VW Passat), and now with n900 there is no go. I'm took by surprise here.

Someone needs to address this ASAP; as this is not new stuff and its 2010. now...

Android guys are screaming also (it seems this Open Source and rSAP are not liking each other -- which is strange as my car unit in VW is Linux also).

http://code.google.com/p/android/issues/detail?id=4402