A toddler is dead after being hit by a vehicle in Moiliili this morning.  It happened just before 7:30 a.m. near the intersection of Kapiolani Boulevard and Kaaha Street.  A 37-year-old woman was backing up her Toyota RAV4  when she apparently hit the two-year-old boy. Paramedics took the boy to the hospital in critical condition, and he died there a short time later. Police say the woman, who was a neighbor, was distraught and crying after the collision.  They have opened a negligent homicide investigation.