I think the turning point for him was his excellent presentation in the first youtube broadcast of cs231. If I remember correctly he was getting seven-figure offers before he even graduated from Stanford. I do not know him personally and I doubt I will ever meet him but we did compete for the same position at Tesla and I lost to a very worthy opponent. my only regret is that the final interview would have been with Elon Musk himself and I would have loved to meet him.