Exactly. With a passenger you share the same locality and when traffic gets tricky, the passenger tends to focus on the situation at hand as well and won't expe

Exactly. With a passenger you share the same locality and when traffic gets tricky, the passenger tends to focus on the situation at hand as well and won't expect immediate responses. With a remote conversation the other side is completely unaware of your local situation; the conversation takes places in some sort of blank virtual shared reality where only the participants and their conversation topic reside — your brain ends up needing to be in two places at once. We're just not very good at that.