Tesla (TSLA) has been walking a tightrope this year. Shrinking deliveries, revenue sliding downhill, profits trimmed at the edges, quarter after quarter the numbers have looked anything but cheerful. During the second-quarter call, CEO Elon Musk did not sugarcoat things either, telling investors to buckle up for more rough quarters ahead. Ordinarily, such words would have sent Wall Street stampeding toward the exit. But Tesla is not ordinary. While the headlines have screamed trouble, the undertone is shi ...