One thing that you get in spades from his Letter to Shareholders, is something that's helped me with articulating my own buy and hold strategy. He talks about taking positions in companies because what you're buying is fractional (or whole!) ownership in a business - not placing bets in a casino.
The financial industry and media are pretty much geared to create the bets-in-casino mindset; what's the share price TODAY / RIGHT NOW; is it going to go UP $1 or DOWN $1; is guidance too high by 5k cars this year?!?
Mostly, it's a whole bunch of noise designed to get bettors into the casino, making wagers (transactions).
That's the mindset and approach of Buffet's that makes it easy for me to be a Tesla bull, and a Buffet fan. There are elements of his investment philosophy that don't work for me, and there are elements of the attitude that do work. The two fit together easily in my mind.
It also helps that I work in high - tech, and though I don't work in autonomous driving, I do work in a field that uses many of the techniques (data science), so I'm reasonably comfortable evaluating progress and setbacks along the way with one of the technologies Tesla is working on, that we think will be valuable. You'll also find that I'm not investing in the insurance business