The points raised henceforth on the car's registration number and designations in interesting and informative. The only point I would like to mention here is that official cars, in writing, say 'for official and private use till designatory holds position.......' Please note here that while private companies pay huge salaries, government gives such things. As for 'sarkari paisa', if fuel is included, there is a limitation. If not, you pay from your own pocket. Same goes for maintenance like engine oil, filters, body parts, etc. I may be wrong; but that's the rule in a relative's case.