Can this really be used to control onstar?

http://members.cox.net/onstar/

it seems like it'd work. i've been thinking of trying it when i have no other projects to work on (long time from now, lol).

So what does it do?

It can't talk to you.
You can't ask it questions.
It can't unlock your doors.
Navigation, maybe if you have navigation software that read it's output.
Alone, I'm not sure it has any real purpose.

You need some input device and a screen to read it's information.