I no longer have the smart phone I used when I got caught, but my HTC EVO is actually quite accurate. I've pulled up my current speed while in a car (not at the

I no longer have the smart phone I used when I got caught, but my HTC EVO is actually quite accurate. I've pulled up my current speed while in a car (not at the wheel). It was spot on with the number from the car's dashboard. On that note, my father has a BlackBerry smart phone and his Endomondo GPS tracking app states all sorts of weird things. He went for a few mile long hike and it thought he traveled a few hundred miles across the San Francisco Bay Area. (And yes across the bay.)