Of course it has to be Tesla’s source. It’s a new process that hasn’t been made public. Who else it could be? And why are the quotes around source? Reuter apparently found it newsworthy to publish the news.

Is it any different than countless of Apple’s rumors, such as this?

Apple Makes Major Progress on No-Prick Blood Glucose Tracking for Its Watch

https://news.ycombinator.com/item?id=34899471

I guess we’re back to unquestioning stenography of Tesla “breakthroughs”. My cat “could” also be an industrial breakthrough, though it is highly unlikely because he is old and lazy.

They [don't have a PR department](https://electrek.co/2020/10/06/tesla-dissolves-pr-department...) so the press can't even ask them for comment