A Georgia driver mowed down a 10-year-old boy who was crossing a street with his older brother and cousins then “kept going” — leaving him just steps away from a nearby hospital and forcing the kids to try to save him, family and cops say. “His brother and his cousins, they tried, but they’re children,” […] The post ‘Heartless’ driver mowed down 10-year-old crossing street with brother and cousins then ‘kept going,’ mom says the kids tried to…