The unidentified Ontario Provincial Police officer pulled over a car midday Tuesday near Leamington. The unidentified driver told her his passenger had accidentally severed his finger while working on a motorcycle.
The two men had the finger in a bag.
The policewoman radioed a message ahead to a hospital and rushed the injured man in her cruiser to a doctor prepared to do re-attachment surgery, the Amherstburg Echo reported.
She didn't give the driver a speeding ticket, for which the OPP said in a release was commendable along with her prompt response to a medical emergency, the Windsor Star reported.
There was no word midday Wednesday if the surgery was successful.