I pulled up into my grandma's driveway, put the car in park. The car continued moving forward and when I depressed the brake pedal, the car accelerated for some unknown reason. So I put both feet on the brake and it still continued to accelerate. My car crashed into my grandparents garage door, then into their car, then pushed their car into their washer and dryer, causing those appliances to push against the wall, breaking the structure, busting water lines, smashing the washer and causing damage.