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Cuppola things:
1. mpg may not be the "best" metric but it's what we've long used. It's tough to turn ships this big around. Remember in the '70's when the entire U.S. WOULD BE METRIC in a few years??? Go ahead and use gpm and see how many really get it and how many have eyes glazed over.
2. Don't assume fixed distances either. It is proven that miles driven varies with various economic conditions.
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