The former were pure prophecies with no viable, known methods to achieve them at the time. Self driving cars are in active development, and look to be within sp

The former were pure prophecies with no viable, known methods to achieve them at the time. Self driving cars are in active development, and look to be within spitting distance of full autonomy at least for most driving scenarios. It's possible that last % of situations will be super hard to solve, sure, but it's still a very different thing than someone just going, "oh man it'll be cool when".