Tesla CEO Elon Musk attends the groundbreaking ceremony for the Tesla Shanghai Gigafactory in Shanghai, China on January 7, 2019. Ali Song | Reuters Tesla is among hundreds of auto industry players asking a US sales representative for extended tariff exemptions on parts and materials imported from China used to make or repair cars. Supply chain problems are contributing to skyrocketing prices for new and used cars in the United States. Tariffs levied during the Trump administration’s trade war with China are contributing to these price increases, especially as temporary exemptions from some of those tariffs expired in late 2020….