Scania Active Prediction system alters speed based on topography to save fuel

As useful as GPS is in the modern world, we're really only at the tip of the iceberg when it comes to some of the potential functionality of satellite-based navigation. The Active Prediction system under development at Scania, a member of Volkswagen AG, is one example. The system fuses GPS and cruise control, allowing the vehicle to predict terrain features of the road ahead and help to boost gas mileage.

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