Also, the GDC came back with an
answer and basically said "Not standard, but if the refs felt a multiple card was appropriate...."
Which seems a bit of a cop out. I can understand that they don't have all the details, etc. But some sort of statement saying the refs could if they felt the card was deserved for some action or collusion on the part of the whole alliance.... But based on even the vague answer provided and the fact that the announcer said it was for the autonomous driving of the one team... I'd say the refs missed the call with the group yellow card.