After 24" of snow and some 5' drifts, clearing the car was daunting. I did use the Snow Broom carefully. It seems that the Opticoat Plus coating has done its job.
Now the roads are clear and world is starting up again.
Now of course the daily commute will deliver some salt to the car.
I will do a clean with Optimum non rinse product once it warms up a bit..