3. The method of claim 1 , wherein the turn for navigation is a right turn, wherein playing the non-verbal prompt comprises: playing a first set of non-verbal tones on a set of left speakers in the plurality of stereo speakers; and after playing the first set of tones, playing a second set of non-verbal tones on a set of right speakers in the plurality of stereo speakers.
3. The method of claim 1 , wherein the turn for navigation is a right turn, wherein playing the non-verbal prompt comprises: playing a first set of non-verbal tones on a set of left speakers in the plurality of stereo speakers; and after playing the first set of tones, playing a second set of non-verbal tones on a set of right speakers in the plurality of stereo speakers. 4. The method of claim 3 , wherein the first and second sets of tones are different sets of tones.