"Why should car computers be any different?"
Passenger entertainment & communication systems aside... the core components of automobiles - even new, sophisticated automobiles "should be" stripped down, single point of function systems - not general purpose "it can do anything, load the program" computers.
They "should be" single function capability systems that have zero deviation for inoperable conditions.
I believe my view is likely to stand alone in the corner and we'll have automobiles that have function issues. For now they are not safety impacting (aside from rare proof-of-concept tests) but I envision they will become safety concerns - not a simple engine mis-fire.