In the winter months I park/store my Acadian in the second driveway beside my house. The driveway is a combo of earth, gravel, and grass. A friend told me that he heard that parking a car on earth and grass can help cause rust under a car, as mosture comes off the earth and grass. Has anyone else heard this? I suppose it could be true, but it rains or drizzles most everyday around here in the winter. Even if I parked the Acadian in the cement driveway, it would be wet under the car. Would it make any difference if I put plywood under the car? Almost everything under the car is primered and painted.