Ethanol-fueled eco Bentley to offer 630 horsepower
Because ethanol burns at lower temperatures than gasoline, powertrain engineers are able to turn the wick up on boost pressure without undue fear of detonation, which, in turn, allows the engine to produce more horsepower. The flip side of this debate, especially for cars like this Extreme Bentley, is that an already thirsty engine is going to guzzle even more fuel when it's being fed E85.
Besides the ridiculously powerful powerplant, Bentley is also said to be reducing the weight of its next supercar, likely through the use of carbon fiber and aluminum in place of steel. In a rather unexpected move, reports also indicate that the British engineers have removed the rear seat for even more weight reduction.
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