Darrin Carroll was running a little late for work. At about 7:20 a.m. on a cold January morning in 2019, the sun had not yet shown its face in northern Kentucky. Carroll, who had just reassured his employer that he was on his way, steered his red 2003 Chevrolet flatbed truck east along Richwood Road, a typical two-lane ribbon of black top. That's when everything went wrong.