As we're talking about two+ major players competing to outfit the auto fleet with self-driving software, I'd like to hear discussion of the pros and cons of veh

As we're talking about two+ major players competing to outfit the auto fleet with self-driving software, I'd like to hear discussion of the pros and cons of vehicles sharing software. Technically, economically, and especially regarding driving dynamics. Will a Google car be able to caravan with a GM car? Is a single hive mind able to produce better energy/travel time results than the multiple hive mind of Google/gm/tesla/toyota/+100m humans?