Elon Musk is officially richer than Warren Buffett.
Tesla stock, of which Musk is the largest holder, continues to hit record highs.
Musk is worth 70-billion dollars.
Tesla stock is up 259% in 2020 compared with the benchmark S&P 500 index's 1% gain.
Buffett, meanwhile, donated almost $3 billion of Berkshire Hathaway stock, causing his riches to shrink.