Speed Limiters on Cars

Basically, speed limiters are connected to the engine’s computer and prevent the car from reaching top speeds. Once sensors report that a vehicle is traveling faster than it’s allowed to (based on the manufacturer’s specifications, not road signs), it signals to the engine to reduce the flow of air and possibly also the sparks that create combustion.

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What is Hypermiling?

Hypermiling refers to the practice of squeezing every last possible mile out of a gallon of gas. Judging by the numerous news articles from 2008, when gas prices soared and the economy tanked, the practice became known through Wayne Gerdes, publisher of cleanmpg.com. The movement has its supporters and detractors.

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