A WOMAN has been charged with leaving her toddler locked inside a car in scorching temperatures while she went shopping, forcing passers by to rescue him. Shopkeepers used a hammer to smash their way into a four-wheel drive and rescue the screaming youngster in the car park of a shopping centre at McGraths Hill in northwest Sydney on Tuesday. The temperature inside the car was estimated to be more than 60 degrees Celsius. The boy's 34-year-old mother was interviewed at Windsor Police Station this afternoon and charged with leaving a child unsupervised in a motor vehicle.