Starter problems of the 2008 Chrysler Pt Cruiser

The issues started at the end of November early December 2013. My car battery was unable to hold a charger and my car continuously would not start. I spent about 200 to have the alternator and starter tested as well as get a new battery put into my car. I then had the same situation happen the mechanic tried a new battery and my car worked for a week. Then it died again the mechanic sent me to an electrician the electrician still claimed it was the battery. Then today I had the car jump started again only to find I got not even half a mile from where I was and my car lights all over started flickering then my car completely shut off to the point my emergency four ways would not even work this happened right at a green light my car wasn't even stopped. This happened late at night so it was dark out and I had to call 911 because I was unsafe and so was anyone else trying to get down the road because I had no ability to signal to people in a safe way to move into the other lane. I have also found numerous reports by people driving my year and other years of the same make and model who have had very similar issues to mine. With a constant response of being told that there either is no problem with the car or they can say there is because they cannot duplicate the problem at the time. These cars are walking death traps to there owners when this happens cause it comes out of nowhere with no explanation and the company/dealer refuses to acknowledge the problem. I really don't think it is right for this to go unspoken any longer because if no one has been killed by it yet its a huge chance someone will/could! a vehicle cannot be perfectly fine if it just quits while driving for no reason at all.

While driving, the instrument warning lights start flashing off and on, the gauges drop to zero then com back up, and the engine falters sometimes and stops other times. When engine stops, power steering is lost. Car will start up again with starter.