Tesla stock prices in the expectation that they'll have robotaxi services and general purpose robots in the near future. And also that they will be leaders in these fields, ahead of the competition.
How likely/unlikely that is to happen is debatable, but that's why some people are valuing the company so high right now.
If they're counting all the auto-completed code that's inserted after pressing Tab on an AI suggestion (such as from Copilot), then I easily believe it.
Tons of places in code only have 1 possible thing that can go on a particular line, given the context, and there is no point in typing it all out manually.