Engine Shut Off Without Warning problems of the 2010 Chevrolet HHR

In a parking garage on the 4th floor. Backing out of space. While backing up, I hear a loud boom. Nothing behind me. Thought perhaps a tire failure. Put vehicle in drive to pull forward out of traffic lane, and the engine accelerated uncontrollably. Brakes wouldn't respond. By the grace of g-d or reflexes, I turned the wheel to the right to avoid flying through the guardrail and off the 4th story of the parking garage. Vehicle came to a halt when it smashed into a concrete support pillar. Both air bags detonated, passenger-side air bag apparently broke the windshield on that side. Engine shut off. Lights in passenger compartment turned on, hazards started flashing on/off (couldn't turn them off). Waited for tow truck for 5 hours. Tow drivers had to jump battery - couldn't get front hood open, back door electronic lock non-functional due to dead battery. Tow driver climbed inside car, removed inside decking to access battery. Tow driver jumped battery, attempted start. First two or three times, it wouldn't start, eventually on the 4th or 5th time it started but the engine was racing again. Tow driver put car in reverse and it flew backward (I thought it was going to go off the deck of the garage backwards. . . ). He stopped the vehicle, turned the wheel and headed forward - it shot down the ramp until they got it out of the garage and on the truck (I was outside the vehicle watching from a safe distance while he did this). Vehicle totaled. Not sure what the problem is/was, but I'm lucky to be alive. Have heard of issues involving stuck idle solenoids, drive train problems, etc.

My vehicle is on gms recall list because of an ignition problem. I was driving down a small hill on Friday may 2, 2014, when my car shut off. I had nothing on my ignition key ring when this happened and had just my key in the ignition when this happened. I called gm and let them know what had happened they offered to give me a rental car that they will pay for until my car is fixed . My concern is that these cars should not be on the road because they are a safety hazard to not only the person driving these cars but also to the people on the road with them, I know gm is doing all that it can to fix the problem and wonder why they are being allowed to be driven on the roads when they are unsafe. I do not feel comfortable driving my car because of the risk it poses not only to me but to others on the road and will be getting a rental . Oh and by the way when my car shut off, it was all I could do to steer it around the corner because off course my power steering was gone making it difficult to steer.