You're on the money mbzman. In California they would be pretty useless but in areas where they put salt on the road they can make a big difference in seeing at night. When I lived in Quebec , and they salt like crazy there, there would be so much salt on your car sprayed up from the melted snow on the road that your car would turn white. Needless to say , salt spray and hot headlights meant your headlights got coated pretty quickly. Having those wipers and headlight sprayers were pretty handy on a dark winters night.