***** Tachograph. On the surface, it looks innocent, but underneath, its ***** does some amazing work. On a chart, it records every detail of a vehicle's movements-the time taken on journeys, the place, length and time of stops, and the speed travelled at any time of the journey, including the speed travelled before and it the time of a collision. This German invention is now being tested by the PMG. It is claimed to be compulsory equipment in public transport in Germany, parts of the U.S. and o