Can Tesla remain the leader in the modern electric vehicle market it effectively created? That question has been on the mind of EV buyers, investors, analysts, industry watchers, and Elon Musk stans for months now. That’s especially been the case as questions over demand in China and the US — not to mention the Twitter drama — seemed to cast a shadow on the electric automaker’s success story. On Thursday night, Tesla revealed its answer to this problem, at least for now: steep price cuts on its lineup of cars, which in some cases amount to as much as 30...