Good point. A robot head then. Sticking up from the hood. With a bunch of arms and making pistol signs at all the pedestrians around him. See Johnny Cab except

Good point. A robot head then. Sticking up from the hood. With a bunch of arms and making pistol signs at all the pedestrians around him. See Johnny Cab except of course one inside to chat the passengers (turned toward the passengers then in chat mode, and deflated in privacy mode), and one on the hood to make pedestrians feel safe.