Tesla’s big Model 3 bet rides on risky assembly line strategy

Tesla Inc Chief Executive Elon Musk took many risks with the technology in his company's cars on the way to surpassing Ford Motor Co's market value.Most automakers test a new model's production line by building vehicles with relatively cheap, prototype tools designed to be scrapped once they deliver doors that fit, body panels with the right shape and dashboards that don't have gaps or seams.Tesla, however, is skipping that preliminary step and ordering permanent, more expensive equipment as it