> Two other solutions exist. One is spinning the window, you'll see it on ships. The other is making the window hot. There are two more solutions I can think o

> Two other solutions exist. One is spinning the window, you'll see it on ships. The other is making the window hot. There are two more solutions I can think of: hydrophobic coatings, and blasted air. I believe these both perform quiet well in less intense rain. Unfortunately both of these suffer from performance degredation from dirt/bug/bird poo etc, so not a perfect replacement to a traditional wiper.