Tesla's make-or-break year? 2018 will test Elon Musk

Tesla has unveiled a new Roadster, the new version of its original sports car. It's the fastest production car ever made "period," according to CEO Elon Musk. Tesla, the upstart that has defied the unwritten rules of the auto industry, is finishing up a year in which the challenges of manufacturing a mass-market electric car in large quantities finally hit home. After years of bragging about its advanced manufacturing techniques, the Silicon Valley automaker faces a reality check when it comes to making its first mass-market car, the Model 3 electric sedan. With output failing by a wide margin to meet Musk's promise of 5,000 vehicles per week by the end of December, Tesla could be facing a make-or-break 2018 The new year may determine whether the company will need to again go hunting for cash and whether it maintains its leadership position in electric vehicles.