Earlier quoted context omitted.
I'm not sure radar would help - the pillar is a stationary object, and car based radar tends to drop all returns at the same rate as the car is moving forward. Radar isn't terribly precise, so you end up with tons of returns off signs, bridge abutments, etc. Remember, with radar, Teslas will happily autopilot themselves into a semi truck across the road, stopped fire trucks, concrete road barriers, etc. I see no reas…
Here's what happened another time someone argued that "radar can't detect stationary objects". https://news.ycombinator.com/item?id=16722461 Radar does detect stationary objects, come on.
Tesla's implementation of their radar processing drops all returns from anything stationary, given the forward speed of the car. In the context of a Tesla thread, I didn't think that needed to be specifically stated, but will do so in the future.