2019 will be a critical year for Tesla — here's what to expect from the automaker (TSLA)

Tesla endured a wild and crazy 2018.
The coming year offers numerous milestones that will determine whether Tesla thrives or struggles.
I've broken them down, month-by-month. 
If 2018 was the wildest and craziest year in Tesla's 15-year history, then 2019 is shaping up to be its most critical year.
CEO Elon Musk's all-electric automaker will enter 2019 having produced and sold more vehicles than ever and the company could be well on its way to a half-million in cars delivered by the end of