My 1999 Chrysler 300 M will stop running while driving at any speed it will then restart on it's own. This has happened several times but only when either my wife or I are driving. The people at the 2 garages we took it to say they can't fix it until it is broke. I think by that time I will have been run over on the interstate. No warning lights or faults show up on the computer. Any one else had this problem and had it fixed?