russel
./_dazed_and_confused
The USA is one country and Detroit is a city in that country.
It’s really not an essential in order to do trade and that is all that is needed, it’s just a part of the EU project and is doomed to failure, imo.
If you are running a corner shop you can do it with local labour, if you are doing anything hi tech you need world wide recruitment, not being able to access European workers because of lack of free movement will act as a brake on the UKs ability to compete in the hi tech sector, what are you planning to export? cheese?, jam?