What is this 运行 in ...国内的汽车行业与汽车市场运行环境发生了前所未有的改变?
国内的汽车行业与汽车市场运行环境发生了前所未有的改变 

This segment I would probably translate as "The domestic automobile industry and the operating environment of the automobile market underwent unprecedented changes." 

国内的 domestic
汽车行业 automobile industry
与 and
汽车市场运行环境 operating environment of the automobile market
发生了 happened/underwent
前所未有的 unprecedented
改变 changes

Hope that helps!