Greg Biffle, one of NASCAR’s 75 Greatest Drivers who became known in his later years for his humanitarian work, died along with three family members in a plane crash Thursday.

Federal investigators have released harrowing new details regarding the private jet crash that claimed the life of NASCAR legend Greg Biffle and six others.

Greg Biffle is famous for racing a car, but he'll be remembered most for how he helped those in need after Hurricane Helene.