"Apparently there are still places in the US where people are still using the old-fashioned analog gear driven pumps to meter gas instead of the common digital ones. The old pumps will need new gears to go past $3.99/gallon for gas and those parts are getting harder to come by. It is strangely like having a Babbage Difference Engine run the gas pump. Gear driven gas pumps are another unexpected but sad victim of rising gas prices. No more clicks and bells."