In the AI community, the term "The Singularity" means the future event when General Artificial Intelligence is first created and begins improving itself at the speed of supercomputers. The term originates from mathematics, and indicates that no one can predict what will happen after the event. History will become irrelevant, because there has never been an event like it in the past.
If Tesla succeeds in their plan to create General Driving Artificial Intelligence ("Full Self Driving"), that event will cause a mini-Singularity in the transportation industry. No one can predict exactly what will happen, because automotive history will become irrelevant. Sales projections based on the past are unlikely to be correct.
For example, consumer demand for Tesla vehicles will become irrelevant because whatever vehicles Tesla doesn't sell (or chooses not to sell) will be added to the Tesla-owned robotaxi fleet. We should be asking not "how many cars can Tesla sell by X date" but instead "how many can Tesla possibly produce by X date," because production will be the only limit on their mission of transitioning the world to sustainable transport. Maybe the coming Battery Day presentation, new gigafactory announcements, and mining subsidiary announcements will allow the skilled number-crunchers here to make educated guesses.