Tesla is hitting some skepticism from analysts. This week, Morgan Stanley's Adam Jonas expressed some "sobering factors" about the company's future — and the stock promptly fell almost 9%. On Friday, Goldman Sach's Patrick Archambault expressed some more substantial reservations about CEO Elon Musk's electric carmaker (via StreetInsider): Into 2016, spending for the gigafactory accelerates and Model 3 spending begins.