GM OnStar TwitterI have a few friends (me included) who frequently log onto Twitter with Twibble on the Nokia smartphones (like my highly recommended Nokia E90) and gripe about the traffic jam they are stuck in. Apparently the many Twitter users who do this around the world has ignited a lightbulb somewhere in GM’s OnStar subsidiary.

GM OnStar is a subscription-bsaed information service for GM cars that provide communications, vehicle security, GPS turn-by-turn navigation and various other features in the US and Canada. You can say it’s similiar to BMW’s BMW Assist and BMW ConnectedDrive.

The OnStar service will reportedly soon add the ability to update your Twitter status from inside your car via a voice to text conversion feature. You can also listen for responses to your tweet via a text to voice feature.