Total loss of power whilst driving - car failed totally in dark on a roundabout leaving driver at mercy of traffic following at rear - no hazards or warning systems available, driver had to disembark and pray - police arrived and flagged away oncoming traffic until vehicle could be moved onto hard shoulder area. Serious risk to lady and son in car. Car worked fine for two weeks after recent purchase but then dash lights started coming on and off intermittently, resulting total failure within minutes.