Kenneth Adelman has had to learn to be patient. An electric-car enthusiast and retired “computer geek,” in February 2012 he was the first person to plunk down a $40,000 deposit for Tesla Motors Inc. TSLA -3.30 % ’s Model X sport-utility vehicle. At the time, Mr. Adelman didn’t know the Model X’s total price, but Chief Executive Elon Musk said the vehicle would be in his hands by the end of 2013. He is still waiting. After nearly two years’ worth of delays, Tesla kicks off Model X deliveries Tuesday. Although first on the order list, Mr. Adelman, 52 years old, doesn’t know when he will get his vehicle and he is showing little concern. “I’m happy to have waited for the X to be all that it could be,” Mr. Adelman, who also owns a Tesla Roadster and Model S sedan, said in a recent interview. He is […]