'Tesla also said second-quarter sales and production of Model S sedans and Model X crossovers, both of which typically sell for $100,000 or more, fell short of the company’s and analysts' expectations.Instead of 25,000-plus, it got just over 22,000 cars to customers worldwide. The cause was a shortage of 100-kilowatt-hour battery packs, Musk said, a problem that Tesla hadn’t previously disclosed'