You really think that promise was from Gwynne herself? It sounds like Elon's words coming out of her mouth.
starting at 16:37:
CA: So you really believe this is going to be deployed at some point in our amazing future. When?
GS: Within a decade, for sure.
CA: And this is Gwynne time or Elon time?
GS: That's Gwynne time. I'm sure Elon will want us to go faster.