What is the independent variable in what's the fastest way to cool a soda?

I keep my soda's outside in the garage. But i live in Texas so my sodas get really hot. and wen you pore it into a glass of ice it becomes watery. The best way is to put the can in some tuperware and fill it with ice and water then add salt...... (the salt lowers the fresing temp of water) then put it in the freeser and wait 20 min. and you have a soda the it 2 degrees above freezeing.

You don't need to wait 20 minutes. I believe that it would take less than 3 minutes to cool a soda in this way. If you move the soda around in the ice-salt-water it will cool even faster (around 1 minute).

It was proven in Myth-busters (Ep 29) that salt water and ice took 5 min to cool a six pack to 35.9 degrees F. I am unaware of the water to ice to salt ratiOS. The fastest way to cool your soda is to put them in ice and water in a cooler. So making it cold will make it cold.