If Google is accurate, that's 34.1 MPG (U.S.). Not bad for a mountainous route in a Matrix. Is it manual or automatic?
Is this a four lane highway? If so, you can really bleed off the speed at the crests without disrupting traffic too much. I would also let gravity store some energy in your momentum to help you up the next incline. As much as the curves allow, anyway. Looks like a fun twisty drive!
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-Terry
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