This appears to be a new driving technique to help people cope with the rising gas prices. Seems slightly risky and foolhardy too. But with the gas prices rising the way they are people are ready to try anything to make that gallon stre........tch longer :
An increasing number of motorists in US are following a radical driving technique designed to eke out every last mile from a tank of fuel. Known as 'hypermiling,' the methods can double gas mileage, even in gas-guzzling vehicles.
Hypermiling includes pumping up tires to the maximum rating on their sidewalls, which may be higher than levels recommended in car manuals; using engine oil of a low viscosity, and the controversial practice of drafting behind other vehicles on the highway to reduce aerodynamic drag.
The "advanced" techniques of hypermiling are in addition to well-known approaches including keeping speed down, accelerating gently, avoiding excessive idling and removing cargo racks to also cut down on aerodynamic drag.
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