Do you rely on your car’s navigation, traffic or roadside assistance features? Then you may have woken up to an unpleasant surprise Tuesday as AT&T shuts down its 3G network.
While our smartphones stopped relying on 3G long ago, that’s not the case for our vehicles’ telematics systems, which capture a car’s location, speed, idling time, harsh acceleration or braking, fuel consumption, vehicle faults and other data. That loss of GPS data means your car’s built-in navigation system may stop working Tuesday.

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