I know full well that rebranding goods for sale without an agreement with trademark owners is illegal. But what about goods I own? Can I for instance remove a logo from my car and put on a different one, assuming that I don't try to sell it to anyone and in general don't try to pass it for a different brand where it would matter? For instance, I'm still going to communicate the correct brand to the authorities, insurance companies, etc.
Are cars special w.r.t branding, or do the same rules apply to other goods as well, such as cellphones?
And if it's not allowed, which part exactly is illegal, removing the original logo or installing a different one? Car stickers which imitate logos seems to be allowed, e.g.