It seems involving wind and propellers obfuscates the principle too much, let me instead ask:
Can a cart pulled by a rope go faster than the rope?
(Nothing else powers the cart.)
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2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
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