Tesla also cannot collect any data from cars driving in EU, but they gather enough data in US.
I'm a relatively recent driver (I've only gotten my license 3 years ago), but even so, from what I've read and what I've seen with my own eyes driving cross-border around several European countries I can tell you that there definitely is a "cultural" difference in driving between different areas of the globe.
More exactly, a driver in Switzerland in Germany will react and act differently on the road compared to a driver from Romania, and a driver from a smaller city will certainly drive differently compared to a driver from a big, congested city (I noticed this phenomena with my own eyes a couple of weeks ago when I went to a quieter part of my country and I didn't understand why most of the incoming drivers weren't "negotiating" more when the roads were getting narrower, like it happens in the big city where I currently live, they were just sitting in front of my car not making any maneuver, waiting for I don't know what).
Taking all this into consideration, I'm pretty sure that the differences in driving styles between Europe and the USA are big enough that Tesla's data collected in the States will be of not that much use when applied to European driving styles. Also, see this recent thread on /r/cars of car-obsessed redditors discussing about why German-like autobahns could never work in the States: https://www.reddit.com/r/cars/comments/6p30xd/would_an_ameri....
Have you followed the news regarding German automakers and the law? As far as Germany is concerned, they are the law (as in OEM lobbyists literally writing the verbatim law texts that affect them).
They have to remove painstakingly all the obvious traces of you from all a data dump. All the non-obvious must be also possible to request for removal, if a citizen requires.