Some folks hate it, some folks love it.

I use rain-x on my vanagon so I can see through the truckwash on the
superslab.

Any comments good or bad on it?   I took a local volk out for a drive during
the rains recently,  she got all twitterpated over not having the wipers
furiously thrashing in spite of being able to see just fine.

Pensionerd.  (Sacramento is usually pretty sunny since the central valley of
CA is techically a desert)