Musk and Karpathy have been dead wrong about LIDAR for years. Remember Musk making the absurd claim of a million Tesla robotaxis by 2020? I think most hilarious is that both Karpathy and Musk claim the LIDAR systems are too expensive. Yet, in the same 2019 Autonomy Day they simultaneously claimed that Teslas would be able to drive themselves and operate as robotaxis, earning their owners passive income and therefore justifying significantly increased MSRPs. So, the $7k LIDAR system (that accelerates safe autonomous driving) is not worth the cost, yet stumbling towards autonomy on vision only is? If the car becomes an money-earner, you should use all of the systems available. The 2019 Autonomy Day was an utter embarrassment. I'm sure 2021 will be more of the same.
So now it seems that they've realized their folly in logic. So what's the solution? Well, you can't just complain about COST of non-vision perception systems. Because, as noted above, that doesn't make sense if you're going to simultaneously claim that your car will be able to earn you money (augmenting any extra hardware cost that gets you to that point faster). No, now you have to smear all non-vision perception systems. You have to say that their data is worthless and detrimental to the overall effort.
The entire claim from the 2019 Autonomy Day that "vision is what humans use to drive" is also completely bogus. Humans use many senses to drive. They feel the pedals and steering wheel. They use their equilibrio sense to sense motion. And they use their hearing to hear other vehicles, sirens, and issues with their own car (driving with headphones in is illegal for a reason). Any modern car, even a Tesla, is also using far more than just vision when attempting autonomy. Forget about radar and LIDAR for a moment. There are endless sensors in the drivetrain. Steering angle sensors and multiple IMUs for the electronic stability control. Brake and wheel sensors for the ABS. Temperature sensors everywhere. And countless other ECUs. The notion that vision is getting you there exclusively is nonsense. There's no good argument against LIDAR today other than perpetuating a lie to sell cars that are cheaper to produce. And, Karpathy has a massive professional conflict of interest in making CV the main player -- he's a CV expert. He was never a fusion expert before his hire. If CV is the pathway forward, he's gets to remain "the guy". It certainly behooves HIM to make that claim.
Autonomous driving will not be achieved in this decade. Perhaps ever. Ask yourself honestly: if you were tasked with building an autonomous commercial aircraft OR an autonomous car, which would you choose? Most would say aircraft -- nothing to really hit in the air, fully mapped airport and runway systems, and far fewer variables. Yet autonomous aircraft still do not exist. Perhaps the edge cases always rule the roost. Ask yourself why driving would be any different...