Lose Power Steering problems of the 2008 Chrysler Pt Cruiser

I was coming home from work and driving down the street when the lights on the dashboard went out, the gas gauge went to zero and the car just died. I lost power steering and braking and I was lucky there was no one behind me at the time. The key was locked in the steering wheel and I could not restart. I called 911 for help as cars were now zooming up behind me stalled in the lane. I was so scared that someone would hit me. I sat waiting for the tow truck for about 15 minutes when the lights suddenly came on again and the gas gauge went back to full. I tried to start it and it started right up. I was able to drive it 2 blocks home. The next day I drove to the cleaners and while trying to park it died in the parking lot. I again waited and it finally started again. I took it to the Chrysler dealership and they say they can find nothing wrong. They suggested I junk it for about $100. I have also taken to an independent mechanic and he said he could not find a problem. I see there are others who have reported a similar problem. And now there is a Chrysler recall on other 2008 models with what seems like the same problem. I cannot drive this car because it is unsafe in traffic.