[He tilts his head, a sign of not completely understanding her question... at first. But then he realizes her meaning -- what he had been doing just moments before -- and gestures with a hand, palm up and open. The silver quarter gleams, placed flat in the middle.]

You mean this? I was using it for [recalibration, he almost says, but then remembers that Konoha will not understand the terminology] focus. For concentration. It won't aid you in your motion sickness. It might actually make it worse.

[He makes a gesture towards the front of the car.] If you won't go to the front, will you at least turn to face that direction? And look just straight ahead.