If we had gone - route search

When driving have you ever wondered whether you would've been better off by going a different route? The data now exists to answer that question: real-time connected car GPS. All that's needed is a service that provides the ability to query that data.

Even when you're following the best route as indicated by your GPS, it's only a prediction based on current road conditions. It's not a retrospective that definitively answers the question of whether it would've been quicker to go another route.

The service would be an add-on to existing GPS services that would tell the user at the end of the journey whether the route they chose was the quickest.

The system would work by piecing together the data from other cars that go segments of the alternative route.