Cruise Control problems of the 2011 Chevrolet HHR

I purchase chevy Hhr in good conditions until I got on the freeway. As I was immerging in to the freeway the accelorator got stuck on 6rpm and was speeding 60mph I tried to slow down and the brakes didnt go down at all. It was all locked up my kids and I freak out with the speed that the car was picking up and how the breaks werent working I decided to use the emergency handdle and some side bushes to slow down the car and nothing worked! I checked to see if the cruise control was on and nothing then I checked to see if it was on drive it was the I pushed hard on the breaks but never once it went down at all it was so hard I force my foot so much and the break handdle emerged off the freeway and immediately hit something more solid to stop the car. It was then we headed to a building but I hit a palm tree. The car exploded black smoke and the airebags went off the front door didnt open and my daughter and I jump off through the small little windows. We thank god we are alive!! my two kids 11 and 8 could have died w me in that vehicle if I didnt exit the freeway before the car kept picking up speed. Was a very scary situation. I would never ever ride a chevy Hhr or any other chevy as I live. The car is completely destroyed in the front and the windows are cracked.