While other automakers rethink their plans as the global appetite for EVs slows down, BMW is vowing to stay the course. The German automaker says it still plans to offer an EV in every vehicle segment across all of its brands, including Mini and Rolls-Royce. And most importantly, BMW is investing billions of dollars in new battery technology, including a new controller it calls the “Energy Master.” As the political winds shift, BMW hopes doubling down on EV technology can allow it to take the lead from Tesla, fend off the coming tidal wave of Chinese EVs, and grow its…