Based on his Twitter profile, Handkammer spent 25 years in F1 and had a hand in a thoroughly impressive 13 world championships and 97 race victories in that time. He even worked with champions like Michael Schumacher and Sebastian Vettel, according to Engadget. Handkammer left Red Bull in October 2014, which was around the same time Vettel bid farewell to the squad.
Elon Musk tweeted a welcome to the new hire and said, "He will apply Formula 1 techniques to revolutionize servicing mainstream cars."
Given Tesla's hopes to launch battery quick-swap locations, Handkammer might be the perfect person for this job. If he can get a team to replace four wheels quicker than you can read this sentence, maybe he can find ways to make the exchanges for EVs even easier.