Okay, that makes sense. Men on moon was 5 years away in 1964. I might argue that today men on the moon are over 50 years away, in the sense that currently there

Okay, that makes sense. Men on moon was 5 years away in 1964. I might argue that today men on the moon are over 50 years away, in the sense that currently there's no-one there. Guess it's a half-full / half-empty, discussion. Technically, humans can walk the moon, but moon walking isn't actually a thing. With self-driving cars, I'd argue mixed bag. Yes, it's already possible (with caveats), but "no" it's also at least five years away. When can I have it? When would it make sense for an existing cab company to jump ship? I mean, fire the drivers and replace old fleet with commodity self driving cars. Personally I'm not so interested in what kings, millionaires, governments can achieve unless it's either a stunning scientific achievement or somehow relevant improvement to society.