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Old 03-03-2009, 10:49 AM   #8 (permalink)
robbiewt
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Location: Boo Town, MD
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Yaris? - '08 Toyota Yaris LB
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Down hill all the time!

But that's not possible.

Even the slightest climb can hurt gas mileage. It would be very hard to make roads go down hill in both directions. Therefore, a stretched wave would be best for traffic in both directions.
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