If there was no Canada, it would have been a tad difficult to gauge how fast you were driving your car, or how many kilometres the car had covered. However, thanks to the odometer, the modern version of which is credited to Samuel McKeen of Nova Scotia, who attached the first odometer to the wheels of his carriage, one can know how fast and how far has one travelled. Judging by the fact that last year saw some 90 million cars being sold, 3.2 million of which were in India, the odometer has certainly travelled far.