
When my eldest son, who is now 36, was a teenager, I had him convinced that I had a way to tell what speed the car had done while he was alone in it. Of course, I was lying. I had nothing. Then one day I lucked out when a guy at work said to me "Wow, you were flying along last night on the highway there". And I asked him to estimate the speed "I" was doing, and he said that he was doing ten KM over the speed limit, and I passed him with no problem. So, I had the location, I had the time, I had the direction of travel, and I had the speed. My son was the driver, and I had him dead to rights, too. My son no longer borrowed the car after that. Not for speeding, but for lying. Things are easier these days, as parents, we can check out how the driving is going by logging on and getting the information from the
GPS tracking device we might choose to fit to our car. What great idea.