If you notice a white or grey film on your car's paint after a winter storm, this is probably leftover road salt. Take your car to be washed right away, but make sure that the temperature is above freezing so that you do not harm the exterior. You can have your car waxed before winter starts so that you start with a base film of protection against the corrosion of road salt.
Barber Honda can help you fix any paint chips or other issues that may arise if road salt happens to damage your vehicle this winter.