I was watching this video of a live chicken trapped on a moving truck and thought it was strange that it’s not possible to say anything to them even when circumstances might warrant it. All we got is honking and waving. There could be a touchscreen interface with a map of nearby vehicles. It could be voice controllable or the passenger could do it for safety.
Dude, people can’t handle the complexity of simply driving the vehicle as it is. Bad things happen when adding handling dynamic communications into the mix with people who aren’t trained to the level of combat pilots. That’s why we don’t let people juggle a cell phone while driving.