i have painted countless cars of my(beaters) with rattle can sutoleaum. It takes along time to JUST PAINT. The big problem is doin it without leaving ‘tigerstripes’. if you dont lay the paint down evenly it wont shine right-you’ll end up with dull spots. I suppose clearcoating it might cover that part of it. I have tried a roller on my very first winter car years ago-painted it it like a black and white cow spots and all, LOL wish i had pics of that. I used latex on that one though.