I think you guys are being a little harsh on the guy. In April 2016 the SLC, UT Tesla store had Model X Sig 137 or something as it's demo unit, sporting Washington plates iirc. It was available for immediate sale if someone wanted it. The vast majority of reservation holders that had placed firm orders were still months out from getting their cars (but things were getting closer to caught up by May-ish after the great draught in April and the 3rd row recall). I'm guessing the X that was for sale had been a return, likely due to poor build quality (it wasn't a failed sale - it had been partially wrapped and had aftermarket tint; one of the sun visors was broken). Anyhow, my point is that there will be a few odd situations crop up that will allow an inventory or lightly used car to be sold. But with much higher demand, and I dare say a higher tolerance for less-than-perfect-exactly-desired-configuration than Model X buyers, I don't expect them to last long (thinking on the order of hours).