A Tesla Cybertruck (left) and a DeLorean (right)Alistair Barr/Business InsiderDoes Elon Musk have a hit on his hands with the Cybertruck?I wouldn't go that far. But recent sales data from auto industry tracker Cox Automotive is worth examining ahead of Tesla's results later on Wednesday.Tesla sold almost 17,000 Cybertrucks in the third quarter, according to Cox estimates, making it the third most popular EV in the US during the period.