GentlemanJonEmilioEstevezNot at the expense of their own industries they aren't. Also what kind of message would it send, the only reason to stay in the EU is we will punish you if you dare to leave? It proves the leave campaigns point about the EU being an anti-democratic bully.It won't be spiteful, it won't cost their industries, it sends the message that there will be continue to be benefits to membership, it doesn't prove any such points.
How will it not cost their industries.
https://next.ft.com/content/f6cda050-20bb-11e5-aa5a-398b2169cf79
"About a fifth of all cars produced in Germany last year, or around 820,000 vehicles, were exported to the UK, making it the single biggest destination by volume."
If you start getting into a trade war and imposing tariffs, how will that not affect sales of European products in the UK.