A man "kicked out" at a mobility scooter as it was being driven down the street.
The victim was driving his fully-enclosed scooter in High Hoe Road, Worksop, on November 28 at about 6pm when he approached a man who was walking with two women.
Once the scooter drew close to the group, the man began kicking its front windscreen.
When the victim tried to get out, the man closed the door on him and pinned him inside the scooter.
Nottinghamshire Police would like to speak to anyone who witnesses the incident, particularly the man who intervened.
Anyone with information is asked to call Nottinghamshire Police on 101.