If the extended glide puts you in a higher elevation parking spot, you might actually come out ahead on the return trip as well. That's what I have at work. If I milk the glide to the very top of the lot, I can leave using no gas until the light a block away. It's an extended glide plus potential parking.
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11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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