We finally know what Tesla means by an “affordable” electric vehicle. On Tuesday, the electric automaker revealed the stripped-down, less-fancy “Standard” version of its best-selling Model Y crossover and Model 3 sedan. These EVs will sell for several thousand dollars less than the existing versions, which are now rebranded as “Premium.” These slightly cheaper Ys and 3s aren’t exactly the $25,000 baby Tesla that many fans and investors have anticipated for years. But the announc...