The team later announced that Newton suffered two transverse process fractures in his lower back and no further internal injuries. The team announced Tuesday that the fourth-year passer was in fair condition and undergoing tests at Carolinas Medical Center.
Newton was discharged from the hospital Wednesday morning, the Panthers announced, adding that he is experiencing soreness but is in good spirits.
According to Charlotte-Mecklenburg Police Department spokesperson Rob Tufano, the accident occurred on S. Church St. at 12:30 p.m. ET.
"Both Newton, who was the driver of the truck, and the driver of the sedan were taken to (a) hospital with non-life threatening injuries," Tufano said.
One eyewitness saw Newton's vehicle flip "two or three times," Jonathan Jones of The Charlotte Observer told NFL Network.
According to a Wednesday police report, no one was cited in the incident and it appeared to be a routine accident.