It's not clear to me why this thread is in the economics forum.
Nevertheless , i would like to comment on what i see as a hurdle to wider acceptance of electric cars: time needed to charge the batteries. I don't see a technological solution with lithium ion batteries because of temperature limitation. One possible, non-technological solution is larger capacity which has other drawbacks. Another possibility is battery rental where one doesn't own the battery and simply swaps a discharged battery for a charged one at "refueling stations". This requires standardization. Something difficult to implement in capitalist economies without government intervention. This is only a factor for long distance travel of course.
I don't understand that there is a necessarily a connection between a country adopting digital currency, i.e., elimination of hard currency, and bitcoin. See Sweden for example.