http://www.youtube.com/watch?v=_AyXNeRbpRk
Automatic today announced an interesting new dongle which connects to your iPhone and leverages its Bluetooth connection to retrieve some useful data from your car’s onboard computer, adding a dash of Google Maps and gas pricing info so you can plan your trips and track fuel efficiency, but also keep tabs on your vehicle's critical data, check those engine alerts with actionable recommendations and more.
It connects to your car's OBD-II Data Link Connector to retrieve fuel, mileage and engine data and beam it to your iPhone via Bluetooth. A companion iPhone app combines this data with your GPS location, current fuel pricing and map data to track your drives, offer assistance for a bunch of issues and even automatically call 911 and your family members in an unfortunate case of a car accident...