“Beijing saying it won’t abide by any deal if Washington goes ahead with threatened tariffs.”, it’s like a movie comedy in which a bank robber is frustrated because he pulls out a gun and everyone goes on with their daily life, not reacting to threat. https://www.wsj.com/articles/u-s-china-end-latest-trade-talks-without-settlement-1528035024 …
What is it? 2.5% tarriff for Chinese cars into the U.S.? 15-20% in the other direction? Increase the tariff on Chinese car imports by 2.5% every quarter until it's matched. Enough time for U.S. business to adapt. Enough strength for the Chinese to understand meaning of "fair."