Nice that those little handy navigation devices not only help the directionally challenged people like me.
In a three pronged study which evaluated drivers without a navigation system, drivers with a navigation system, and drivers with a navigation system that included traffic, the results revealed that the drivers using navigation devices 1) drove shorter distances and 2) spent less time driving. Conducted in two metropolitan areas of Germany - Dusseldorf and Munich - the study also showed that drivers with navigation devices had a 12% increase in fuel efficiency, as measured by liters of fuel consumed per 100 kms. Fuel consumption among those drivers using navigation fell from 8.3 to 7.3 l/100kms. When the study results are annualized, they equate to a nearly 2500 kilometer drop in distance driven per year per driver, and an average of euro 416 in savings on fuel annually per driver.