Presently, the BMW 740e iPerformance plug-in hybrid (the 740Le here) pairs a 255-horsepower, 2.0-liter four-cylinder with an electric motor rated at 111 hp. Total output stands at 322 hp, and the 9.4 kWh lithium-ion battery can get the car 14 miles down the road on electricity alone. But the 7 Series lineup will get a mid-cycle refresh next year, and BMW Blog says the 740e will add...