I’m gonna guess there was already a lot sentient sand in trains, planes, and cars, and good design principles to make sure it (almost) never fails and stuff like the entertainment system doesn’t break the whole vehicle. I’m gonna also guess Musk fired anyone with that sort of background because they said no to some harebrained idea.
Is this way. The train have separate system for control. Nothing may touch. Car is the same. Have only simple connection of entertainment to CAN bus. Only control basic thing. Can not touch driving.
Plane use separate wire for every thing.
For all three the safety critical software is formally verify.
I remember a tesla teardown that was like “they simplified the cabling reducing how many cables are needed” and every engineer in the replies was like “ABSOLUTELY DO NOT DO THAT WTF”
I read that they daisychained each module and controller using ethernet cabling which could cause cascading failures. I don’t know if this was a rumor or if it was corrected or what
A lot of tech used in applications like vehicles are old. There’s a reason people complain all the time about slow and clunky infotainment systems in their cars, and that’s because the manufacturers go with older, more reliable, and less failure prone versions of various technologies
It’s shit like Musk trying to stay on the bleeding edge that causes problems. When an eight year old version of Android crashes in your car, it’s going to crash in a way that’s predictable from the last eight years and thus easier to diagnose and fix. When an eight day old version of Tesla X OS or whatever the fuck he’d call it crashes, you bet your ass it’s gonna crash in spectacular new ways nobody knows how to fix
I’m gonna guess there was already a lot sentient sand in trains, planes, and cars, and good design principles to make sure it (almost) never fails and stuff like the entertainment system doesn’t break the whole vehicle. I’m gonna also guess Musk fired anyone with that sort of background because they said no to some harebrained idea.
Is this way. The train have separate system for control. Nothing may touch. Car is the same. Have only simple connection of entertainment to CAN bus. Only control basic thing. Can not touch driving.
Plane use separate wire for every thing.
For all three the safety critical software is formally verify.
I remember a tesla teardown that was like “they simplified the cabling reducing how many cables are needed” and every engineer in the replies was like “ABSOLUTELY DO NOT DO THAT WTF”
Do they use CAN for everything?
I read that they daisychained each module and controller using ethernet cabling which could cause cascading failures. I don’t know if this was a rumor or if it was corrected or what
In fairness, all can failures are also cascading and most automakers use can
i’m not an engineer why is that bad?
Pretty much
A lot of tech used in applications like vehicles are old. There’s a reason people complain all the time about slow and clunky infotainment systems in their cars, and that’s because the manufacturers go with older, more reliable, and less failure prone versions of various technologies
It’s shit like Musk trying to stay on the bleeding edge that causes problems. When an eight year old version of Android crashes in your car, it’s going to crash in a way that’s predictable from the last eight years and thus easier to diagnose and fix. When an eight day old version of Tesla X OS or whatever the fuck he’d call it crashes, you bet your ass it’s gonna crash in spectacular new ways nobody knows how to fix
there’s no way anyone like that survived the design phase of the cybertruck. anyone who wasn’t fired surely resigned.