Cliffs:
It also gives you a little more info on each bit... but you'll have to go to the site to see that!
Quote:
Fuel Economy: Where the Energy Goes
Only about 14%–26% of the energy from the fuel you put in your tank gets used to move your car down the road, depending on the drive cycle. The rest of the energy is lost to engine and driveline inefficiencies or used to power accessories. Therefore, the potential to improve fuel efficiency with advanced technologies is enormous.
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