But Mr. Musk is playing 11th dimensional chess that the rest of us are incapable of understanding. But more seriously, there are reasons they didn't start on it until now, maybe those reasons will persist and they'll get past the sunk cost fallacy and just decide to cancel it.

Even then, what's the chance that Tesla will remember who gave them a $99 deposit. SpaceX completely forgot about how I gave them $599 for a downlink terminal. I had to email them scans of my credit card bills to convince them to look for their records of the transaction so they could refund the charge on my credit card. (And even then, they only refunded $500 or the $599 I spent.)

But I'm grousing about SpaceX, I'm sure Tesla has a better AR/AP/CS system.