Shares in the electric carmaker climbed 12.6% after it struck a deal to sell 100,000 vehicles to the car rental firm Hertz. Tesla has been the world’s most valuable carmaker for some time, but brands like Ford and GM make more cars. For years, Tesla struggled to ramp up production of its cars, leading some investors to speculate it would fail. But last year the company, led by billionaire Elon Musk, upped its game and became profitable for the first time, prompting its shares to take off. NowTesla surpassed a market value of $1 trillion on Monday, making it the fifth such firm to reach the milestone. Do you think that Elon Musk is likely to be the first world dollar trillionaire?