Tesla has unveiled its much-anticipated Model 3 electric car - its lowest-cost vehicle to date. The company's chief executive Elon Musk said the five-seater would start at $35,000 (£24,423) and have a range of at least 215 miles (346km) per charge. He added that his goal was to produce about 500,000 vehicles a year once production got up to full speed. The California-based company needs the vehicle to prove popular if it is to stay in business. The first deliveries of the vehicle are scheduled to start in late 2017, and it can be ordered in advance in dozens of...