A police officer in the United States on the move transferred from the patrol car to another car, NOVA reported .
The police in a small town in Michigan noticed that an elderly man had collapsed behind the wheel.
His pickup truck was driving at a slow speed on a busy street and was a danger to other road users.
The officer managed to get out of the patrol car and stop the pickup truck. The relatives of the 63-year-old driver were called to confirm his illnesses. He was taken to hospital.