Brake Electric Antilock problems of the 1999 Saturn SC2

Driver attemtped to enter left lane on interstate while traveling at 65-67 mph. While entering lane, and at diagonal, had to hit barkes suddenly due to driver in car immediately ahead of vehicle leaving right lane without notice. Hit barkes and rear right wheel "gave' and car rear end began to fishtail uncontrollably. Driver had to exit highway to ceter v-shaped median. Traveling at high, though reduced rate of speed. Car traveled down near incline into v of median center. Car hit ascending area of medianwith front (80%) left (20%) portion of vehicle. Tore off fogs lights, broke lower air dam and tore off license plate brackett while crumpling license plate. Left front tire hit inclined area of median. Vehicle flipped onto roof. Despite impact, air bags did not deploy. Driver suffered concussion, body lacerations, cervical fracture. Bumper travel.