TomTom's new Active Driver Feedback will speak up to tell you about your fuel consumption, speeding, harsh steering, and braking. At the end of your trip it'll summarize and chart how well you've been driving, too. [TomTom via Ubergizmo]
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"The features will be available in Europe Q2 2011 to folks who own TomTom PRO navigation devices and have a subscription to TomTom WEBFLEET."