Islamabad traffic police challaned Chief Justice of Pakistan Iftikhar Muhammad Chaudhrys official vehicle for overspeeding, reported a private TV channel on Thursday. CJs son was in the vehicle which was being driven by the driver. The traffic police stopped the vehicle for overspeeding, and asked the drive to show papers of the vehicle. When the driver failed to show the papers, the traffic police challaned and shifted the vehicle to police station. Later, the driver managed to show the papers and took away CJs vehicle after paying a fine of Rs200. According to traffic police spokesman, the vehicle was challaned for overspeeding.