Seems to contain 3 highlights:

They got a PCB/component from the US.

1) Elon mode per article is handfree minus the keep your hands on wheel stuff. Article clearly says "confirming" existence, rather than claiming this is a new discovery

2) They pulled video off the component - random vid from whatever the components past life in US was I guess

3) They got some sort of insight into what sort of data is streamed back to tesla HQ. No details

They appear to have pulled this off an unspecified PCB component out of a tesla using "600 EUR" worth of gear, which to me suggests Tesla stores stuff locally unencrypted. Not an issue I guess but still interesting