I doubt it made me drive faster, it allowed me to be a lot more relaxed and have better awareness of what was happening outside because I didn't need to concentrate as hard on trying to see through the windscreen. Even with good windscreen wipers in heavy rain or spray they only leave a small clear section so you are working hard just to see. With the RainX the entire windscreen was completely clear so much less strain.
I use Aquapel and it works better at low speeds compared to RainX. And honestly it does make me drive faster in the rain (the tires I run also have a very high rating in the wet). In rain and with a little 'speed' (80-140 km/h), I don't even turn on the wipers
I'm eager to try that, and still curious why the industry didn't push for a one-click solution here.