Tesla on track to join S&P 500 index after fourth consecutive profit

Tesla has notched four straight quarters of profit for the first time, a breakthrough for the electric car maker that puts it on course for inclusion in America’s blue-chip index and could further boost demand for its soaring shares. Elon Musk’s company said it made a profit of $104m (£82m) in the three months to the end of June as it sold more of its cheaper Model 3 and Model Y cars, despite a production shutdown at its California plant that lasted for several weeks. Four cons