Tesla CEO Elon Musk attends the groundbreaking ceremony for the Tesla Gigafactory in Shanghai, China on January 7, 2019. Song of Aly | Reuters Tesla is among hundreds of auto industry players asking the U.S. Trade Representative for extended tariff exemptions on parts and materials imported from China and used to make or repair cars. Supply chain issues are contributing to soaring prices for new and used vehicles in the United States. or early this year. In October, the USTR said it would consider reinstating tariff exclusions on a case-by-case basis, especially for imports that can only be obtained from…