Check out this article. As the author points out, “some technology that is completely unknown right now will save us!” is magical thinking. A quote:

We could call the implausible amounts of disappearing carbon in the models a kind of “carbon rapture,” magicking the pollutant away by mysterious means. It’s easy to see how those eager to believe we can be saved from climate change’s effects without much effort would want to believe in the coming carbon rapture. But the dubiousness of this joyful “tech-will-save-us” assumption is getting harder to hide.