While Mercedes is pushing its EQ brand of hybrids and EVs, the two-letter electric signifier also resides in the automaker’s more traditional vehicles. In the new 2019 CLS 450 (starting in approximately the low $70,000s), electrons are used to give the car a boost when you need it or turn the engine off while the vehicle is cruising at highway speeds. It’s a wonderful feature on a wonderful car, and except for some old tech, the CLS 450 makes you forget Mercedes is calling it a coupe even though it has four doors.