>> okay. calm down. >> she came very close to hitting people. people wouldn't move over. >> troopers try to warn other drivers with flashing lights and sirens. >> copy. there's a semi blocking at the 16. >> we wanted to make sure there was everything we could do to prevent loss of life or serious injury. >> trying to get ahead of the vehicle to clear traffic ahead of her. a semi can't get over in time. >> in one chilling moment, ulvestad narrowly escapes a crash. >> kia sorento goes under an overpass on the interstate with a guardrail around the sporting pillar in the median. she came very close to striking that guardrail. >> she made it. >> ulvestad is driving one handed.