"I like the designs, except the last one. I don't see the point in an attendant desk inside the car. Since it's a new experience, that carry the autonomous word, I think these services to be can take away the attendant and the cashier's desk and replace all that with a simple and efficient  self service coffee machine. Or, if it is really necessary, a robot barista. But I guess the experience of a personal moving coffeehouse  will be better without any attendant."