> The radar was added to all Tesla vehicles in October 2014 as part of the Autopilot hardware suite, but was only meant to be a supplementary sensor to the primary camera and image processing system.

I guess I'm surprised that what sounds like a large change in ConOps can be rolled out as an upgrade across a fleet in such a short period of time. It'd be fascinating to hear what sort of V&V had to be done, and how it was accomplished so quickly, to make this happen.