[thackney]

In an internal combustion engine, the lower heat content of alcohol can be offset by certain advantages in its combustion properties.

You must know more about engines than Saab.

Saab 9-5 Aero BioPower Concept

"The 9-5 BioPower can also run on any mixture of ethanol and gasoline," said Jan-Willem Vester, corporate communications manager for Saab Cars USA. If you can't find a gas station with E85 on tap, you just fill up with the regular stuff and the engine management system adjusts the timing and boost accordingly.

"Mileage is approximately 30-percent worse on ethanol," Vester concedes, "but ethanol is typically 20-30 percent less expensive [at the pump], so for customers it's budget-neutral."

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Too bad that cheaper part didn't hold very long.

[Mr. Lucky]

You're comparing the fuel consumption of both cars at peak performance. The peak performance of the engine on ethanol is much higher. All you gotta do is keep your foot out of the carburator when you're running on ethanol.