About dry ice in ur car ?

Remember this esp when we buy lots of ice cream during Baskin Robbins31st day offer!!!They normally put dry ice in your ice cream pack if you buy a lot.
A friend bought four packs of ice cream and to prevent it from melting,the seller put the dry ice amongst the ice cream.

My friend put it atthe back seat (not the back of the car) and he started to drive with thewindows closed and the aircon on (as what we all do). Soon after that,he had difficulty breathing and it was getting worse by minutes.Luckily, he was in a traffic jam and when he almost fainted, beside himwas an ambulance. He dragged himself to the ambulance and got the oxygentreatment. He was getting better on the way to the hospital.

The ambulance officer drove his car to the hospital and he had the sameexperience. However, before his condition worsen, he opened up thewindow and he can breathe easily. Only later, when my friendreturned to office and told his colleagues about his story, they pointedto him that the dry ice was the problem.

WHY?
Dry ice was made of CO2 and when it "melts", it becomes CO2 gasimmediately without leaving any wet mark (that is why it is called dryice).CO2 is easier to be linked up in our blood and thus, when the dry icesublimes into CO2 gas, it fills the car room with it along with the aircon circulation and caused CO2 poisoning. So, don't put the dry iceinside your car if you are using aircon with fully closed windows.
Youmust leave the windows open for such situation.
Hope this will help to prevent any fatality just from a small negligencelike this. Imagine if you have your children inside, they might be thevictim.

p/s: ... quite impossible to me =.=