(JACKSON, Wyo.) – An Iowa truck driver is lucky to be alive after a runaway truck crash on Teton Pass Monday night. Investigators say the truck was loaded with talcum powder and lost its brakes at around 6 p.m. The driver took out over 240 feet of guardrail before going over the edge. Officials say the truck was about 15,000 pounds overweight, though none of its contents were spilled. The driver was not seriously hurt.