On September 20^th at approximately 10:50 pm the Medicine Hat Police along with other emergency personnel attended to the scene of a single vehicle motor vehicle collision in the 2100 block of Brier Park Place NW.   The preliminary investigation found that a smaller car was travelling at a high rate of speed, failed to negotiate a turn, and rolled on its roof.  Both the driver and the passenger of the vehicle sustained serious injuries and were transported to the Medicine Hat Regional Hospital.  The investigation is still ongoing.