The SF Bay Area was hit by a heavy winter rain storm yesterday and I had the pleasure of driving through it on my way home. I was leery of using my AP 1.0 but after about 15 minutes of stop and go annoyance, decided to turn it on. Much to my pleasant surprise, despite the high winds and heavy rain, AP performed perfectly. I did increase my following distance and stayed only +5 over the speed limit. It only takes a few minutes of "manual" driving in heavy traffic to realize how awesome and stress relieving AP really is...despite its imperfections.