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...but it does make clear why pulse and glide works.
Short bursts of power using the engine efficiently combined with long coasts with the engine off instead of running the engine all the time, wasting fuel on pumping losses from having the throttle all but closed.
The alternative is having a final drive ratio that allows for low RPM as highway speed and an engine that runs efficiently at those low revs. The lower the revs, the higher the load on the engine and the efficiency.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
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