How fast a child can die in a hot car

Sometimes it is a parent running an errand, sometimes it is a breakdown in communications and sometimes it is negligence, but whatever the cause, leaving a child in a car on a sunny day can lead to death in a matter of minutes.
HEAT VS. TIME 
WHAT HAPPENS INSIDE
(1) Sun’s rays (short t-wave radiation) do not heat the air so much as they heat objects inside the car.
(2) Objects and surfaces absorb the rays, then radiate heat (long-wave radiation).
(3) Temperatures inside the car can be