SHENYANG, China — Grey partitions stretch into the gap about an hour’s drive from the middle of Shenyang in northeast China. Behind the limitations is Plant Lydia, a 15 billion yuan ($2.24 billion) manufacturing unit constructed by BMW Brilliance, a three way partnership between BMW and Brilliance China Automotive Holdings. The huge construction represents an accelerated push into electrical automobiles by BMW Group in China as EV specialists like Tesla and Nio eat into the nation’s all-important luxurious automobile market. In a web-based ceremony to open the plant on Thursday, BMW highlighted using synthetic intelligence and knowledge analytics on the…