New here. Hello! I have 66k on a 2015 C-Max Hybrid. I had been driving the car on the highway for about 45 minutes (engine pretty warm by then) when I decided to pass a truck while going up a hill. I was wearing new (and apparently heavy) sneakers and didn't realize how hard I had pressed the gas pedal. The engine revved up loud, the kilowatt energy indicator went all the way into the yellow warning area, and a white puff of smoke appeared in my rear view mirror. I thought, "Oh, no! I broke my car!" I checked under the hood when I stopped 25 minutes later, and I checked under the car for any leakage. All seemed well, and the car functioned normally for the rest of the trip.