A woman driver was left shaken after a gunman opened her passenger door as she waited in traffic on Teesside.
The hooded man threatened her with a handgun and tried to snatch her handbag as she waited in her Peugeot 206 in Roman Road, Middlesbrough.
Cleveland Police said the gunman was unnerved when the woman got out of her car and he fled empty handed.
A 21-year-old man has been arrested in connection with the incident. Police have also recovered a handgun.
Officers have appealed for witnesses to the incident, which happened at 1600 GMT on Tuesday.