There is a special rondel shaped land-bridge that connects the non-island of Ireland to Scotland.Ā But, not in real life.Ā So you can drive across that, though why is a different question.
However, the Aleutian Islands are islandsāyou canāt drive there as I once allowed the crew to do.Ā Which makes it especially annoying for Japan to take, since it requires an amphib to regain your NO.Ā HTH