I used to drink 7 two-liters a day.
Things I've learned from this:
Mountain Dew has the most caffeine in it out of any regular brand soda
Barqs is the only caffeinated root beer.
I was basically a Mountain Dew addict at one point, 2 liters a day every day. Its still the best drink ever, though I drink it a lot less
Supernova, Voltage, or Revolution? (testing you)