A big company i worked for started to have their cars fitted with a milage trackers that you couldnt start the car until you had input the type of milage (i.e private or buisness) and then it would allow you to start the engine. They worked on GPS and recorded the milage and where you drove from and too, and on what roads you did it on, and how long it took you and how fast you drove Then at the end of the month they downloaded it and checked through the recorded info and then charged the driver with his/her private milage.

They claimed they never checked the buisness milage to see how long it was taking to travel between calls but that was bollocks because serveral engineers got the sack for being "spotted" doing private jobs in their lunch hours

Good job i left that company before my Pug 406 got fitted with this tracker