Imagine this, you’re driving down a twisty, winding road, in a convertible BMW with the top down, wind in your hair and in your ears, and the sound of…nothing because you’re driving a hybrid. Sounds pretty awful, right? Well don’t worry because BMW isn’t making a hybrid convertible, at least until the i8 goes topless. BMW has officially stated that six, inline cylinders will drive the upcoming Z4 replacement. This is good news. The Bavarians have always made wonderful I-6 engines; with smooth, buttery powerbands and lovely, growling exhaust notes.