Tesla will face a reckoning this year if it doesn't make a fundamental change (TSLA)

Tesla is piling up promises, from the Semi truck to a new Roadster to fully ramped Model 3 production. The company has a long history of overpromising and underdelivering. That's been acceptable until now, but in 2018 Tesla needs to make good on consumer and investor expectations. Tesla's biggest promise is a good one: accelerate humanity's exit from the fossil-fuel era. Its second-biggest promise is also pretty big: be the first successful new American car company in...