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Synthetic fuels are one just one alternative to oil. Some synfuels are better for the environment, some are worse. Some are made from rocks found deep under the earth, and some are made from the trash in your local landfill. See what you know about the various types of synfuels in our ultimate synthetic fuels quiz.
Electric vehicles have been around since the first half of the 19th century; however, until recently, no reliable, mass-producible batteries were manufactured that could make electric cars competitive with gas-powered vehicles. That's beginning to change.