What I don't understand is why can't somebody love to code and not maintain a public github repo? Sometimes you want to keep things private-- it shouldn't have to mean the best stuff you developed has to be on github in order for you to get a good job as a programmer. It's on the technical interviewer to test out programmer's skills. Too many non-technical recruiters these days are passing on candidates because they don't have a big github repo. That's a cop out and an insult to the profession.
I saw an interview once with the producers saying that 1955 was not that much in the past had changed. So for some of the things (like the gas station attendant scene and some of the cars) they had to go back into the 40s to make it look 'older'.