A college student was killed “almost instantly” when a car part flew off the back of a truck on a Georgia highway, smashing through the windshield of the car she was in. Autumn McClure, 20, was in the passenger seat of boyfriend Tyler Nunley’s car on their way to drop her little brother off at daycare Wednesday when the brake caliper flew off the back of a truck, according to her family. It slammed into her chest and neck, killing her “almost instantly,” her family said in a series of grief-stricken posts.

“My beautiful baby sister Autumn McClure was tragically killed this morning in a crazy car accident,” her sister, Simone Matherly, wrote in one Facebook post. “Myself and my family are in complete disbelief,” she said. “It still doesn’t seem real.

” The freak incident happened on I-75 in Ringgold, Georgia. Police there are investigating the incident but could not share further details, WTVC reported. A photo shared online shows a gray Hyundai with a gaping hole in its shattered windshield.

McClure, a lifelong resident of Soddy-Daisy, Tennessee, just north of the Georgia border, died before emergency services could arrive, her brother, Collin Le, said in a Facebook post. “Take a minute to call your love ones / siblings,” Le wrote. “Also, for the ones that drive a truck with stuff thrown in the bed, please take a minute to evaluate the potential risk of those items flying out, causing injury to others.

” McClure also had a twin sister, Ivy, and t.