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Hundreds of people ignored the distressed cries of a 'dog' trapped in a hot car during a social experiment.
Only four people stopped and tried to help Annie the fake dog left abandoned in temperatures up to 30C.
But in one positive moment, the film crew had to stop a passer-by who was moments away from calling the RSPCA out of concern for the trapped dog.
The sites used across the UK over three days utilised realistic sound-effects while a camera set up camp in car parks and on streets.