Interestingly, I have found on my insurance company website that from today 2 August 2021 you will NOT need a green card to drive in the following countries: The EU (including Ireland), as well as Andorra, Bosnia and Herzegovina, Iceland, Liechtenstein, Norway, Serbia and Switzerland.
The Euro ETIAS visa waver comes in next year too.
Repat insurance is still an issue. Personally I will not be going until Spring next year at the earliest and will research thoroughly before then for the state of play.
Sadly, just popping over on a whim and back will be a little way off and will need a bit more prep.