Check out this super ultra dry coating which is extremely hydrophobic. Its water resistant property is just amazing.Water-based liquids roll right off a surface on contact and leave materials clean and dry. Though the coating application can be very expensive right now, commercialization of this would be a breakthrough.
Nissan has demonstrated a similar coating in Automobiles. This is just so cool, a car that never needs cleaning. Future of automobiles really has some amazing technologies waiting for us.