This is their website. No idea if it is any good or not.
Not much there to go on.
No it is pretty sparse for sure. Thought it might be cool to try it on the sail boat. See if I win more races. :D
I'm pretty sure a coating can't do this:
Won't do crap for anything travelling under 200mph. For our typical speeds any surface feature under about 1/4 of an inch isn't aerodynamically significant.
Oh, may well work on boats, reynolds numbers are a lot different due to density of water being higher than air. Might just start to work on long semi trailers for same reason, different reynolds numbers (due to being significantly longer than typical cars)
Ohhhhkay... read that NASA report...
NASA proved that physical boat-tails can improve economy 36% as might be expected by reducing base drag. There's nothing in there about making virtual or artificial boattails by painting stuff with snakeoil.
I think the only way it can reduce RPM/Mile would be if it was a boat, or an automatic transmission with a lot of slippage in the converter. I think they have a poor way of describing what they mean- perhaps they mean that less RPM/mile is the same as less load being pulled by the engine. Have you ever held your foot on the brake and revved the engine up while still in gear? Same principal, the more drag/weight being pulled means the harder you step on the gas and sometimes higher RPM's sustained while maintaining a certain speed.