A mobility scooter driver left an elderly woman with a broken leg and wrist after a hit-and-run accident.
Audrey Lane is recovering in hospital
Audrey Lane, 84, from Tewkesbury, Gloucestershire, was hit by the electric vehicle which drove off at less than 8mph.
Mrs Lane is being treated in hospital while CCTV footage is being used to try to trace the driver.
He could face assault charges, or even be charged with dangerous driving under the Road Traffic Act.
Mrs Lane's son, Daniel, 59, said: "My mother was standing with her shopping in the High Street, waiting to cross the road.
"The next thing she knew, she had been hit from behind by this man on a mobility scooter. She was in the middle of the road lying on the floor and her shopping bag was thrown half-way across the street.
"She remembers the incident clearly. He told her: 'I can't stop. I'm busy', then went off."
Inspector Les Pritchard said: "The information we have is that a fairly elderly lady was waiting to cross the road outside Somerfield in Tewkesbury High Street.
"As she was waiting, she was struck by a mobility scooter which then drove away."