It seems to me that computer systems have always been a secondary concern on ICE cars. It’s possible the ECUs in question have been so cost optimized there’s n

It seems to me that computer systems have always been a secondary concern on ICE cars. It’s possible the ECUs in question have been so cost optimized there’s not a lot of power left to do asymmetric (or possibly even symmetric, idk) crypto. Bus capacity is also a concern.