I remember reading an article somewhere about Teslas approach vs others using Lidar. It had a great schematic around a Tesla for where radar and cameras can "see". That image confirmed what I see IRL, our cars are almost blind when looking behind us. I really dont see a path to FSD without having a long range radar looking behind us. How can we trust the car to change lanes without seeing cars coming up from the rear??? what happens if a car is flying down the left lane at 90 mph and my car wants to change lanes to pass someone? I imagine its going to pull out infront of the speeding car.