I don't believe at all that China will always be cheaper. And in many cases I wonder if that is even true right now. Labor costs aren't what is keeping US manufacturing cost high, it is capitalist's demands for high and ever increasing profit margins and managerial bloat. Labor is only a small part of the cost of a vehicle. Workers wouldn't care if company profit margins were smaller or if the vehicles they help manufacturer are sold for less than the maximum possible, but the c-suites and investors do.