An unusual car-swap deal turned sour when a man armed himself with a metal bar in Dunedin yesterday. … Police are still trying to establish exactly what happened, but say the ownership dispute was sparked by an exchange of vehicles in the middle of the night. Acting Senior Sergeant Nathan White said the parties had agreed to swap a Toyota Hilux … “It was certainly a wee bit strange for us, but we're getting to the bottom of it anyway.” Mr White said police were not