More than a week after his disappearance, relatives of a missing 11-year-old boy in Colorado says they are not giving up hope for his safe return, as recently released surveillance footage reportedly shows the boy getting into a car with his stepmother the day he went missing.In a video message released on Wednesday, Gannon Stauch’s mother Landen Hiott said she’s “not giving up hope” that the family’s plea for information that could lead to his return.