Re: Obama: 54.5 Miles per Gallon by 2025
I think the 54mph is a fleet wide average, so they can still balance in a few more powerful choices. I'm guessing turbo/superchargers will be common since they allow V6 power from a small 4 cyl for exmaple. Engines are strong enough these days to told hold up to plenty of boost. Supercharged V6 trucks will become more common I'm sure. That would give V6 economy with V8 power.
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