Did Tesla end up going with steer by wire? I support fly by wire on any aircraft that can be flown by instruments and can carry passengers, as the cost of getting to right is worth it in those cases, and can help pilots in a lot of situations. However, how is steer by wire going to help you while driving on a 2D plane, more or less? You can't "fly" a car by instruments, and if the horizon is not more or less horizontal across your windshield and/or the ground is not right under your wheels, steering is not going to help you much anyway. For airplanes, the bottom of the U curve often suggests fly by wire, but for road cars I doubt it would almost ever. How many people are going to inspect and maintain the system correctly anyway? I know people who have totaled cars by driving them on check engine lights, so if this can cause someone to crash it will cause someone to crash.