Emergency crews in Clarksville spent nearly 30 minutes trying to get a man out of his truck after he crashed into a pole Thursday night.
Crews responded to the accident just before 8:30 p.m. at Crossland and Gracey avenues.
According to a news release, the 20-year-old driver identified as Oplis Reynolds was traveling west along Crossland Avenue when, for reasons unknown, his vehicle left the roadway, went onto the sidewalk and struck a utility pole.
Upon impact, Reynolds' vehicle slightly rotated and partially ejected him out of the driver's side window.
It took responders approximately 25 minutes to extricate him from the vehicle.
Reynolds was taken via LifeFlight helicopter to Vanderbilt University Medical Center to be treated for serious internal, head and leg injuries.
He was last listed in stable condition.
Police said Reynolds was the only person involved in the accident. He was not wearing a seatbelt at the time.
Investigators believe alcohol may have been a factor in the crash.