As for buying another house, my next permanent home will likely be on a seastead or sailboat. I left the US and do not see returning unless they have a USSR moment.

Rental car will be difficult, most places I have traveled to in Europe I opt out of getting a rental and just get a hotel in the city and walk everywhere. I always book my hotel rooms through expedia which accepts Bitcoin so there's no problem there.

For things online that require a credit card, I used to rely on brawker.com but now I need to figure out a new way. Hopefully the Bitcoin community fills the vacuum that them leaving has created..