Well, we know Bjørn won a Model X in the first round. Maybe the others just don't want to be in the limelight? Maybe the people who won turned down the offer due to the tax ramifications? There are a lot of likely possibilities other than Tesla is lying about the existence of a grand prize.
Thats the referral program that I am referring to, the one that gave credits and the first to 10 in each region got a free Model X, Bjorn won for Europe and Brooks Dragtimes won for the US. It was a very transparent competition and everyone who had the Tesla App could see who was at what position.
Now they have a drawing and we don't know when or where it takes place and cannot see who won. I am not saying they are lying about the grand prize Im saying that perhaps there is no drawing and they just decide at random who to "gift" the car to based on other factors. Otherwise there would be a live drawing that everyone could see, and in the interest of anonymity they could just use the referral link to identify the winner instead of their real name. I have personally seen non-tesla events where a Tesla was raffled off based on purchased raffle tickets and to see a name picked out of a bucket is more satisfying then not knowing anything unless you won.