Also, Tesla probably has a plan B for duct-taping LIDAR sensors onto their production cars in case the whole camera + radar + ultrasound approach doesn't work o

Also, Tesla probably has a plan B for duct-taping LIDAR sensors onto their production cars in case the whole camera + radar + ultrasound approach doesn't work out (or if LIDARs come down in price and turn out to make the system more reliable). With a massive vehicle base and global network of service centers, there should be a possibility there.