This is the astonishing moment a woman snatches her four-year-old grandson from the path of a robber's speeding getaway car with just a split-second to spare. <br />Hold-your-breath footage from street CCTV cameras in Iraja, Rio de Janeiro, Brazil, shows terrified family and friends scattering as they realise a police chase is coming straight at them. <br />Video: Newsflash
