The problem with achieving this type of water behavior on clearcoat or paint, is you are sacrificing gloss and slickness in favor of a coating that utilizes a form of texture to produce such aggressive water beading. There is a theoretical limit to how tight you can get water to bead on a really smooth surface, and that's a contact angle of 120°. That's definitely impressive but it's well under the superhydrophobic level that you're seeing in the video which is a contact angle above 150°.
So if you really want impressive beading beyond a certain point, you'll need that micro-level texture to help boost it. And that texture is going to alter the way the light bounces off of the surface, and you're going to end up with less shine and gloss, as well as a less slick feeling of the paint. This is why we haven't seen superhydrophobic coatings in the detailing world except for applications like carpet/cloth/convertible tops. Sonax Polymer Net Shield and Brilliant Shine Detailer is about as good as it gets on paint and I think they're using a form of this nano-texture to give off such impressive beading. That's why they don't feel as slick on the paint compared to other products, but they've managed to do it without sacrificing gloss or shine levels. Both of those are still way under superhydrophobic levels.
