So in perusing used Teslas the one option that is high on the "nice to have" list (although not critical) is parking sensors (mostly because I have become addicted to them on our other cars and the S is a bit big). At what point, roughly, were these introduced from a year and/or VIN perspective? Were they part of a package like the "tech package" in those early years or once they were available were they standard from that point onward. I'm not sure, as an example if "parking sensors" equates to "Autopilot" in the early years (in terms of the "package" that perhaps had to be ordered). As an aside, I DON'T care about auto pilot. Thanks! p.s. Hank, if you see this, does your "paid" subscription for Ev-cpo call out the presence of parking sensors?