Understood they do inert testing with their existing fleet. I'm talking about real, rubber hits the road, vehicles actively running the firmware. I have to believe that prior to rolling out firmware on the fleet, Tesla rolls it out to be actively run on some set of beta testing vehicles - perhaps actively run by Tesla Employees driving a variety of real-world road conditions.
Correct, but you need to sign an NDA to run (or rather, for your vehicle's VIN to be whitelisted for pre-release firmware bundle retrievals) a non-GA release.