Given there are auto manufacturers[1] that already exist with self driving cars, I'm going to go ahead and say its not a meme and more just a technology in the process of being fully realised.
Some times, things just take time. Especially when you're trying to create machines capable of not killing the general public.
Some times, things just take time. Especially when you're trying to create machines capable of not killing the general public.
[1] https://www.tesla.com/autopilot