My RV-7 gets ~25 mpg depending on winds, power settings, etc. It’s been done before in private aviation. But, this is a very interesting design. Like you said,

My RV-7 gets ~25 mpg depending on winds, power settings, etc. It’s been done before in private aviation. But, this is a very interesting design. Like you said, aviation does have a long history of new designs making big claims that don’t pan out in reality. I wonder what tradeoffs they made to achieve those results. It’s encouraging they’re into test flying phase, though.