Corrosion of motor cars is of a greater problem in winter when salts are spread on roads to melt ice and snow. Why?
A short-circuited cell is formed when two metals are brought together under the surface of an electrolyte. Corrosion is more of an issue in the winter because the car contains metal like lead and chromium, and the salt sprinkled to melt ice is NaCl, which acts as an electrolyte forming a short circuit cell.
