Tesla passes GM as most valuable U.S. car maker

Tesla (TSLA) is now the most valuable U.S. car maker, as the electric car mark sped by General Motors (GM) in terms of its market capitalization.Tesla shares closed trading on Monday at $312.39, valuing the automaker on Wall Street at $51.5 billion. GM’s stock ended at $33.97, giving it a market cap of $50.2 billion. Tesla overtook Ford (F), whose $44.6 valuation makes it the third-largest U.S. car maker, last week.Tesla’s exploding market cap indicates investors are increasingly see