Why are thousands lining up outside Tesla stores today? Trump knows.

Today is sign up day for the Tesla Model 3 and Tesla disciples are all aflutter. Tesla is a five-letter dirty word in some parts of the auto industry. They’re often dismissed as a short-term disrupter and there are plenty of people waiting for them to fail. But Tesla believers - and Donald Trump's campaign - adhere to Simon Sinek’s “Golden Circle” theory that people don’t buy what you do, they buy why you do it. Today’s lines at Tesla stores (measuring in the thousands according to t...