So combined Volkswagen, Audi, ŠKODA, SEAT and Porsche have outsold Tesla? Doesn't really sound like an achievement, except if you're in charge of mergers and acquisitions.
I really don't know what you're talking about. Volkswagen is a big car company and they invest in their car business. There is nothing surprising about that.
https://www.volkswagenag.com/en/brands-and-models.html
And Volkswagen will soon be making further investments in Chinese brands:
https://www.reuters.com/article/us-volkswagen-investment-chi...