If we were to drive around, we would see gas prices at 55¢ per litre at 8 o'clock in the morning. At 10 o'clock, if we were to drive by, no new truck had come to provide new inventory for the gas station, but the price would go up.
Si on faisait le tour des stations service, on verrait que le prix affiché à 8 heures du matin est de 55¢ le litre, mais qu'à 10 heures, il a augmenté, même si aucune citerne n'est venue les réapprovisionner entre-temps.