If the sticker had said "rollocks to remainers" would your response be identical?

Yes.

Are not assets in marriage jointly owned?

What his wife does with her own car is entirely her own business.

Were a prominent male politician to have a porn actress as a wife,
I wonder what giddy heights his subsequent career would rise to?

President of the USA I would guess.

Also Profumo's career was destroyed by a "bit on the side".

Nothing to do with anything whatsoever. Just like this exchange has nothing to do with brexit. I suggest it ends here although I accept you will probably want the last word. You are welcome to it.