Anybody heard of these?

I am not sure in the video clip if the "hand" is applying full throttle on every clip, looks like it varies from half throttle to full throttle depending on the reaction of the motor (more so than how fine the spray is). Not convinced it benefits anything.

cept the guy selling them. :D
Remember the baseplates they were selling a few decades ago with a fan that was spun by intake air and it went between the carb and intake?
They gave some ridiculous number in better fuel economy from better atomization, but not ONE person that spent the money on one claimed better economy ever.

Al it did was make money for the seller.