I wonder if anyone is still following this thread.
Although an old one.. I'm still interested on it and lately I've been back on programming to parse the commands on my car (Citroen C3).
I'm going slow and do not promise anything, but I think that even that aproach is better than none at all.
Also, some of you have noted that the wiki has been compromised. I'm willing to take over it and clean it up.
Have fun.. and happy driving.