Thanks. I like this idea.

When I first moved to DC, I never rinsed off the underside of my car for the first couple of years. I later paid for it, by having to replace the muffler and other parts that were exposed to the salt used to treat roads for ice - they got corroded. I had the pipe to the muffler suddenly disconnect due to the corrosion while I was driving - the sound of the muffler dragging on the road was loud and unsettling.

So when I was warned about the possible corrosive effect of salt on bike components like the cassette, derailleur, etc. I did not need to be convinced.