Cedar Falls Police and Fire Rescue were called to the Highways 20 and 58 interchange Monday night around 7:30 on a report of a single vehicle accident. When they arrived on scene they found that the lone occupant had suffered a medical event while traveling westbound on Highway 20. The vehicle entered the center median before going airborne as it approached Highway 58. The vehicle struck the center median of Highway 58 and went airborne for a second time before landing on its side on the west side of Highway 58. The driver had to be extricated from the vehicle and was taken to the hospital with serious injuries. Their name has not been released.