It's interesting that cars seem to have their own personalities, and different people have different results and responses. It may be that at Mass Pike cruising speeds the air-flow was sufficient to keep the glass clear, whereas at more normal speeds, the opposite happens. Or just the way it was raining yesterday.
I also hope water in the wing isn't problematic, but I'll wait for a hot dry spell and, after a week or so, cut some rubber discs to fit the large holes and seal them with a little butyl rubber.