Responding to the edited question, see this article from 1993 on converting a car from gas to electric: https://news.google.com/newspapers?nid=2457&dat=19930921

Responding to the edited question, see this article from 1993 on converting a car from gas to electric: https://news.google.com/newspapers?nid=2457&dat=19930921&id=hJ4zAAAAIBAJ&sjid=7TgHAAAAIBAJ&pg=1384,1657576&hl=en https://news.google.com/newspapers?nid=2457&dat=19930921&id=... . Every point you made about thinking ahead 5-7 years from now could have been said in 1993. Second-hand electric parts became more common, petrol became more expensive, etc. Your edits come across as if you are chastising people for not thinking about the future when, at least in my case, I'm pointing out that nothing about your evaluation of the future has changed for decades. Nothing really new can be said about your question because your question itself is probably older than you are. It's certainly older than I am.