Tesla Motors (TSLA) stock fell 8.8% Thursday to a one-month low, but ahead it's "all systems go" for the company, according to Jefferies & Co. analyst Elaine Kwei. The luxury electric car maker's shares are up 3% for the year. Tesla's Q4 earnings report late Wednesday came in with a deeper- than-expected loss, despite a beat on revenue and an outlook for a profit this quarter, amid what the CEO says is "smoother" production of the Model S plug-in