William Paul was 'revving his engine ' while sitting alone in the truck Sunday when passersby alerted authorities in Lexington , Kentucky . The driver of a pickup truck, identified as 25-year-old James Edward Lee Jr. from Kentucky, allegedly shot and killed himself after he accidentally fired one round into the air during an argument with another man on Interstate 65 Paul had two previous alcohol-related run-ins with the law before turning 21 in 2013 . The 22-year-old is a senior studying communications at the University of Kentucky .
William Paul was 'revving his engine ' while sitting alone in the truck Sunday when passersby alerted authorities in Lexington , Kentucky . Paul failed field sobriety tests before being taken to a hospital for facial injuries - authorities say suspects in that situation are not arrested . Paul had two previous alcohol-related run-ins with the law before turning 21 in 2013 . The 22-year-old is a senior studying communications at the University of Kentucky .