I think this is probably the 2nd-worst vehicle ever marketed, behind the DeLorean, but this aspect of it doesn't seem like the biggest problem. Why not just use

I think this is probably the 2nd-worst vehicle ever marketed, behind the DeLorean, but this aspect of it doesn't seem like the biggest problem. Why not just use creative ways to clean it? Make a paste of baking soda, clean the surface thoroughly, then finish with citric acid. It's how I clean my refrigerator ¯\_(ツ)_/¯