digg_url = 'http://digg.com/gadgets/USB_gadget_records_everthing_your_car_does'; CarChip E/X by Davis is a device that logs how you are driving. The CarChip E/X can even be set to beep if you break too fast, speed or accelerate too fast. Changing these behaviors are the top three things a driver can do to increase fuel efficiency without changing the car. The CarChip EX attaches to the OBD (On Board Data) port which is present on most cars made since 1996. From the video review below the fold
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