New York CNN  —  Just this week, Tesla boasted as anxieties swirled over tariffs on automobiles. “Btw, Teslas are the most American-made cars,” the official Tesla account posted on X on Sunday. That’s true, at least according to one measure. The company has dominated Car.com’s American-Made Index since 2021, based on criteria including assembly location, where the parts are made, engine origin, transmission origin and US manufacturing workforce. “Tesla’s manufacturing, both as location of final