I've observed this too. If you leave it in D it will commence to charge the battery at a penalty to your mpg. It's going to do that anyway on your next pulse so it's better to let it use some high load bsfc power than low load cruising power.
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Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
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