Tesla Inc. TSLA 12.66% became the latest U.S. company to cross the $1 trillion milestone in market value as its stock price has more than doubled in the past year on surging sales and rising profit.Helping Tesla cross the mark Monday was news that Hertz Global Holdings Inc. HTZZ 10.09% had ordered 100,000 vehicles from the electric vehicle maker to stock its rental-car fleet, a major bulk purchase that could help the car company get more of its cars into the hands of mainstream consumers.In crossing the $1 trillion mark, Tesla joins Apple Inc., Microsoft Corp. , Amazon.com Inc. and...