INDIGO India’s Tata Group should treat the speed bump at Jaguar Land Rover as a timely memo: The $102 billion salt-to-software conglomerate can no longer put off listing its closely held parent. UK-based Jaguar Land Rover Automotive Plc is burning cash on electric-vehicle technology just as the double whammy of a Chinese auto slowdown and Brexit threatens margins and sales. At average cash burn rates of 670 million pounds ($882 million) a quarter, the British carmaker may struggle to make it through another year, my colleague Anjani Trivedi wrote last month after it ...