Back when dinosaurs roamed the earth, there used to be petrol (gas) pumps with mechancically operated tumblers with the numbers on them to record the amount of fuel that went through the pumps.<br /><br />Our town was so dull that we used to get up early every morning to rush down to the petrol (gas) station to see if the numbers had changed overnight.<br /><br />The numbers never changed overnight, but if they did I'd be pretty sure that the mayor or someone would have done something important. What, I don't know.