Aloha,
Good work on the MPG+. It takes a while to learn all the tricks and get the habits. Pretty soon, you will not be able to go back to the old ways. Listen to me talking like an old pro.
I've still got tons to learn.
The coasting in neutral, engine on, is tricky. It's not the tranny you have to worry about but the rear end. You should try to match the rpm of the motor to the tranny when you shift back into gear otherwise you are hammering your drivetrain. Clunk! It takes some practice but the risk is a worn U-joint and/or pinion gears. Rear ends are designed to take quite a beating but not that highway speed clunk into gear. Taking time to closely match the rpm will eliminate damaging forces and soon it will be habit. It's an advanced technique not all will risk but it's possible.
Do you turn off at lights and eliminate most idle? This makes a surprising difference to FE
I like your wheel skirt mock up!
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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.
