Do you realise you are betting against the entirety - literally - of the automotive industry?
https://en.wikipedia.org/wiki/Autonomous_car#Classification
I don't think anyone says level 5 autonomy in bad weather is close.
https://techcrunch.com/2017/01/04/nvidia-and-audi-aim-to-bri...
That's just the first few stories, and autonomous driving is already in the works - don't expect these companies are starting from zero.
You don't need to replace 100 percent of the cars. You only need to replace 5 percent of them.