Place this in the “Yeah, I can see this coming from somebody SOMEwhere” department: Viper, an auto security system company, has introduced a new iPhone application designed to start your car. Priced at $299 if you own a Viper alarm or $499 if you need an alarm and app, the SmartStart will also unlock the trunk and lock/unlock the doors. Granted there is a Zipcar app, plus there are now vehicles like Nissan Altima, Lexus IS, and Ford Taurus that will start when a keyfob is in the vehicle. However, the SmartStart is natural extention of the idea to aftermarket, and one of the first major aftermarket offerings. Certainly not the last.
You can read about SmartStart and see the associated videos here at the Autoblog post