[analog31]

>>> But you can not just roll all your own electronics in a year.

Naturally, there must be some scale threshold where this is true, so I don't doubt your experience. And my workplace doesn't make anything as elaborate as a car, or with such stringent reliability specs. But my experience is that hardware is always finished before software.

[ska]

FWIW in my experience building both, hardware is always finished first because it’s cheaper to change the software later in the cycle. Much like drywallers patching over electrical/plumbing sins, software fills gaps …

[acheron9383]

I mean the EEs / MEs can certainly turn out a board and housing in under 6 months, certainly on a yearly cycle. Though for the current automakers, they don't have a team for this so it would take them probably 3 iterations to get good enough to actually scale it to a mass market car, and that is if their team has good talent and strong leadership.