Welcome to the forum. It needs to be sanded off smooth. Re clear coated, or wrapped. Personally, I’d purchase new body panels. That was the whole purpose, of replacement panels.
I remember the smart reps, that did a panel swap. At the smart Nationals. The cost of the panels were around $1k brand new. Not including labor. They did the complete swap. A couple smart reps we’re doing it.
The end result. A orange smart car. Beside the standard smart car colors. You could order special color panels from the factory, back then. There was a whole Array colors, to choose from.
smart car, offered several different wraps too. This is a topographic design. That was featured at the National. If I was the OP, I would just have the whole car wrapped.
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