Tesla sales plunged in Europe's two biggest car markets over the past year, while low-cost Chinese rival BYD continued to race ahead — marking what industry watchers are calling a fundamental shift in the electric vehicle landscape. Elon Musk's pioneering EV company registered just 1,110 new vehicles in Germany last month, a 55% year-over-year drop in its largest European market, according to data released Tuesday. In Britain, Tesla's No. 2 market in Europe, Tesla sales cratered by nearly 60% year over year ...