Me either! What the heck is “B” on the shifter?
Actually, B mode is engine braking; using the compression of the gas engine to slow the car down. You dump energy through the engine instead of the brakes. The intent is to slow the car on long descents. Its used because I've heard that when your braking down long hills in a hybrid design like this, prolonged periods of non "B" mode braking will cook the tiny undersized brakes on these cars.