Comment by coryrc

Human-piloted planes have altimeters and airspeed indicators; the failure of which have caused many accidents.

Tesla cars have speed sensors as well as GPS. (Altimeter and ILS not being relevant). I agree with Musk's claim they don't need LIDAR because human drivers don't; it's self-evidently true. But I think they _should_ have it because they can then be safer than humans; why settle for our current accident and death rate?