Why do aircraft use radio signals and ground radar altimetery during precision approaches? Because the visual cues are worthless, or aren’t there at all. Tesla at some point will realize this happens to them too. The visual data from the cameras alone simply won’t provide enough information in all situations. Low light, fog, snow, rain… these happen. Even something so simple as an old road with faded (or non-existent) pavement edge striping can pose challenges. Add darkness or some snow on the surfaces and it’s a very formidable challenge to simply figure out where the road edge is by using visual cues as a human being.
So how to make it better and allow the technology to exceed human limitations? Allow the machine to “see” more than a human can. That’s where things like USS or radar can help - a lot.
Tesla Vision isn’t bad per se. But it’s not the end game. Focusing on making it as good as possible is a good goal. Then add in supplemental information sources / sensory devices (like USS) to deal with the remaining gaps (like the above situations) where TV alone struggles. That will indeed be a robust and reliable system, but is also one that’s probably 3-5 years away. By then, at current rates of development, I suspect Tesla may very well have been left in the dust, particularly by Mercedes, who is very aggressively pursuing autonomous driving technology and having a lot of success at it. My money is on them to be the eventual leader, not Tesla. We shall see. I do still love my Tesla and what it does, and how the company has shaken up an industry that very badly needed it, but they are allowing themselves to fall behind because they overpromise rather than quietly just getting stuff done and then springing it on an unsuspecting industry (their model for success with such things as the original roadster, the model S and the supercharger network). My advice would be for them to stop talking about what they’re planning to do and instead just do it. Bam.