Be efficient take no left turns

Well, UPS is using a “package flow” software program to pre-plot delivery sequences for its 95,000 vehicles. It may sound like over thinking, but the results are staggering: Joel Lovell reports that UPS lopped off some 28.5 million miles from its delivery routes last year thanks to the software, saving 3 million gallons of fuel and cutting carbon dioxide emissions by close to 69 million pounds. We have to wonder: If such a strategy can yield this kind of savings for UPS, what can it do for the average person? How much fuel, time, and sanity might we save in a year of driving if we pre-planned errand-running to minimize (or even eliminate) left-hand turns?