For the love of all that is freedom and openness, I hope not...
open source yes, but Google controls it (the Open handset Alliance is a joke). Sure, you can fork it. But forking and trying to maintain an OS is expensive in terms of keeping it secure and porting upstream improvements to your fork.Being open source means vendors can access the Android source code freely and add proprietary extensions — something that could hold appeal to automakers looking to maximize both control and upgradability of operating systems for next-gen vehicles.
Strange though, GM is part of the GenIVI alliance which is using, IIRC, MeeGo as the platform. Maybe android is a "stop-gap" until MeeGo matures? Who knows.
EDIT: GM is "considering" Android for onstar. Also, GM is a founding member of GenIVI according to http://genivi.org/ABOUT/OurMembers/t...8/Default.aspx