If a throttle cable was jammed it would be the same outcome and at least for me, I can imagine it would make me feel less uneasy. Maybe it's the consistency of code that makes us expect that if one failure exists, more are likely?
If a throttle cable was jammed it would be the same outcome and at least for me, I can imagine it would make me feel less uneasy. Maybe it's the consistency of code that makes us expect that if one failure exists, more are likely?
My opinion is that with mechanical components it is easier to make a distinction in quality. With computers, we tend to stick to GHz or how many nanometers some tinfoil is.
Such as the non-volatile memory chips that began to fail after irresponsible logging practices [0]
[0] https://hackaday.com/2021/02/11/tesla-recalls-cars-with-emmc...
If Teslas have their infotainment (running in React Native?) and motor control/drive by wire on the same computer, I'd be shocked. That's awful.
[1] https://insideevs.com/news/414323/teslas-computers-different...
I wonder what the architecture there is. The author just says "physically distinct," so it is hard to guess much. One one hand the different "computer units" appear to each contain different compute elements -- at least, I think we're seeing the back of the boards and can see multiple CPU cooler retention brackets, right? On the other hand, they all are talking over a network of some sort, so hypothetically they could end up in a situation where the one device ends up dependent on the other (I agree though that it would be shockingly awful and it seems really unlikely).
Even within the Autopilot I guess there must be a mix of safety critical and not so critical elements, right? Autopilot has two tasks -- finding the directions to some address, and not crashing the car. The former is not really safety critical (in the sense that a lost driver can operate the car without crashing it) and is hopefully run on a different computer.
That said, "throttle stuck at previous speed" is not a horrible failure mode, all things considered. If you were driving safely at a certain speed then you should have some time to react and pull the E-break (push the "Park" button on a Tesla). Slowly losing speed until stopping would be better, but there are much worse failure modes too, such as suddenly braking or accelerating.