TL*THE CONTACT OWNS A 2008 LEXUS IS250. WHILE DRIVING APPROXIMATELY 25-30 MPH, THE VEHICLE SUDDENLY ACCELERATED. THE BRAKES WERE APPLIED BUT THE VEHICLE WOULD NOT STOP. THE CONTACT WAS UNSURE OF WHEN OR HOW THE VEHICLE STOPPED BUT THE SHE ENDED UP IN THE MIDDLE OF THE ROAD. THE CONTACT HAD BLACKED OUT AND HIT HER HEAD. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER BUT HAD NOT BEEN INSPECTED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 42,000.