IoT are OK with high risk and move very fast with startup mentality. You have qty zero of CPU model XYZ in stock and qty essentially-infinite of CPU model ABC in stock? Our new product, which will have zero support after shipping, will ship with CPU ABC which is in stock.
Car mfgrs are in the risk adverse capital preservation mode and it takes years for changes to be made. You only have model ABC CPU in stock? Has that undergone enough approval and testing processes to be an automobile ABS controller? No? Then we wait. It'll take years for model ABC to be approved -or- similar years for us to design a new brake controller system.
If you ship an IoT product its assumed it'll have zero aftermarket support, be wide open to new security holes, and probably stop working in a couple years at most. Cars are expected to have parts available for 20 years, never be hacked, and reliably operate in a life critical environment for decades.
If the IoT temperature sensor is 2 degrees high, nobody cares anyway, ship it and fix the software. If the automotive brake controller only applies the brakes 99.9% of the time perhaps because it has less memory so the stack crashes under weird and rare conditions, it'll pass trivial levels of testing while killing lots of people causing a financial and PR nightmare...
A better comparison to automotive would be aviation, or perhaps ocean shipping.
Car mfgrs are in the risk adverse capital preservation mode and it takes years for changes to be made. You only have model ABC CPU in stock? Has that undergone enough approval and testing processes to be an automobile ABS controller? No? Then we wait. It'll take years for model ABC to be approved -or- similar years for us to design a new brake controller system.
If you ship an IoT product its assumed it'll have zero aftermarket support, be wide open to new security holes, and probably stop working in a couple years at most. Cars are expected to have parts available for 20 years, never be hacked, and reliably operate in a life critical environment for decades.
If the IoT temperature sensor is 2 degrees high, nobody cares anyway, ship it and fix the software. If the automotive brake controller only applies the brakes 99.9% of the time perhaps because it has less memory so the stack crashes under weird and rare conditions, it'll pass trivial levels of testing while killing lots of people causing a financial and PR nightmare...
A better comparison to automotive would be aviation, or perhaps ocean shipping.