Tesla (TSLA) has cut prices for the Model S and Model X in the United States and China. Is Elon Musk putting pressure on U.S. vehicle manufacturers? Kevin Hincks says that the price drops are massive. Tesla also released the higher-end Model 3 in China for $35,800. Tom White and Alex Coffey weigh in on Ford (F) and General Motors (GM) margins compared to Tesla (TSLA).