Causalien
Prime 8 ball Oracle
I don't think that's the cause.
The real cause is that the level of automation is incredibly high, and for any other cars when there was an automation issue they could send people to replace the machines, the time it get " re programmed ".
With the M3 they can't do that, because it's too automated. They can't just send people to replace non working machines. The only way to really advance is to get the machines working again. So as long as the machine isn't working, the M3 production doesn't really advance, period.
As for the supplier issue, well, they have so many things to do they can't do everything so they delegated, unfortunately the suppliers didn't deliver right.
But Elon takes full on responsibility (see earning call), he's the one who chose this supplier, his fault.
We all knew this was going to happen right? Had my hopes up for a bit when they delivered early.