Not mustang related, but it's on my cop car, above the drivers side rear wheel. The paint is damaged and this is the only spot of rust on the whole car. I want to repair it before it gets any worse, or spreads. It just looks like surface rust. I don't know jack about body work. Question for the body work and repair guys: What would be a cheap (and effective) solution to repair this? I don't care if the repair spot is visible afterwards. I only paid $1800 for the car and use it as a daily driver. Cosmetics aren't important, I just don't want this spot to get out of control by the tin worm.