Cool idea, really

So, I am in the hospital reading through some old Popular Science magazines my friend Clint brought over. I saw one thing I thought was pretty clever. Have you ever decided that you want a soft drink and realized you didn't put one in the refrigerator? Here is a quick solution:
1. Poke hole in plastic container
2. Put soda can in container and seal it
3, Spray compressed-air duster through hole for about 20 second to get soda down to about 30 degrees F

I think I may just have to try that out.