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It is said that the world runs on oil, but according to some estimates there is only enough to last another 40 or so years. Others point out that there are plenty of other reserves yet to be exploited, and as technology improves we will be able to dig deeper and in more hostile locations, though there are of course environmental concerns with this.
Whatever the truth of it, the petrol pump can be found the world over. The process of filling up the family car, moped, lorry or whatever mode of transport you are using is much the same, and one likely to be with us for some time yet.
The recent slump in oil prices also has global repercussions. To mark this, Reuters photographers around the world have been collaborating on a project called At the pump, a fascinating view of this shared experience. Here are their pictures.