Other Answers (6)
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Diesel engines are the best.WVO is the cleanest fuel,if heated at injectors to 220 degrees.
13% 1 Vote
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Gasoline. That%26#039;s the whole point! We want efficiency because it%26#039;s too ******* expensive!
0% 0 Votes
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Gasoline. Gas/electric hybrids simply use the energy more efficiently.
13% 1 Vote
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Alcohol
0% 0 Votes
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solar energy
0% 0 Votes
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the road
0% 0 Votes