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Old 07-18-2019, 08:54 PM   #257 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)

Oxygen Blue - '00 Honda Insight
90 day: 58.53 mpg (US)
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Solar panels are very sensitive to sun angle, efficiency drops off rapidly when the sun isn't almost perfectly perpendicular to the panel. Panels are also relatively expensive for what they put out, so for this reason, panels are better placed at home and with a motor to track the sun. Maybe you can get a little bit of MPG, but in terms of actual efficiency and money savings, they don't belong on a car (IMO).
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