CNN By Chris Isidore, CNN Business Tesla is celebrating its one millionth car manufactured in China, a major milestone for the electric car company’s global ambitions. But Tesla hasn’t overcome its recent troubles in the country just yet. The one-million milestone news came via a weekend tweet from Tesla CEO Elon Musk. But the China Passenger Car Association said Tesla had already built 974,000 cars in China through the end of July, suggesting the company manufactured just 26,000 cars in Shanghai in the first half of August. That would be slower than the pace at which Tesla was making cars...