In the race to build a functional autonomous vehicle some companies are getting it done, and others, in spite of big promises, several years of effort, and scaled, well capitalized operations have very little to show for their efforts.

Everybody still has a lot of work to do, but the operations that can, at the very least, demonstrate as proof of concept their cars handling just a few miles of of uninterrupted driving in dynamic environments have cleared the biggest hurdle. Following that big hurdle is the validation process, which is tens of thousands of smaller hurdles stretching out as far as the eye can see, but so long as they've cleared the first, biggest hurdles, you can be reasonably confident they'll get to a minimum viable product eventually so long as they keep at it.

I have confidence in Waymo, GM, and Zoox. With everyone else it's either too soon to tell, or I don't have enough information, or they're sucking:

https://youtu.be/jClxcSBNwcw