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My car is younger and looks not so well preserved as this car does, because of, again, other people. That's why i park my car far away from other cars now, when i have to buy groceries. People 'clit together', that's why it's al bumps on my car. I rather walk a few minutes over the parking lot.

That is the best you can too. Less scratches, bumps or worse

Indeed, there isn't much more you can do...