I didn't buff and wax the newly painted interior. I believe that you are right; you could never do that immediately after spray can painting. I just had those can in the digital photo so readers would know what kind of wax(es) that I use. I was mostly posting this article for newbies who are searching for advice on exhaust, paint, wax, mods, etc like I was a year or more ago. Thanks for the info; sounds like you've got the experience!