[Thanks to Angelo]
This is a really awesome idea!
I didn't know you could get enough bandwidth yet over 3G to get a good Google+ video chat connection, but it seems like it works.
(Tell me if I've overlooked anything. One of them is on the Savannah, it has to be a 3G connection, not 4G or wifi.)
(Where did the usual YouTube logo go, which you could click on to go and get a bigger picture? Anyway, this vid is here in more sizes.)
I wonder what equipment and apps he uses.