[J.A.Sucker]

The freezer is cold, for sure, so yeah.

Better yet is to get ice water mixed with salt. If you do this, the water gets much colder (freezing point depression) and the fact that it's liquid on the metal can gives you better heat transfer than the freezer.

Better still is to use rubbing alcohol in ice. This gets quite cold, and I don't think the rubbing alcohol is too bad for you to have in contact with your can of coke. You could use cheap vodka or everclear, too, but that's a waste of booze.