Also, Ferrari's are useless in the apocalypse. I mean one benefit of the apocalypse is that maybe you could drive a Ferrari. Nope, they disable themselves when the grid goes down.

No, the car will be disabled due to the anti-theft system. The anti theft system doesn't need connectivity to work.

It does need connectivity to be disabled remotely by Ferrari. However, that is never needed during normal operation. The owner of the Ferrari modified the car (after market seats, apparently), causing the anti-theft function to immobilize the car as a safety measure.