Yep, Mountain Dew is nasty and I could never stand for more than a sip.
I think the company might be sued to hell and back because if you are offering a product with lots of caffeine and sugar to the point it wreaks havoc with your system it's going to get noticed with the lawyers. If they sell it in two liter bottles, that probably will be seen in court some day. Good catch!
Remember Jolt Cola? Twice the caffeine and all that! Pulled from the market I think.
And we'll have yet another well intentioned paving stone for the road to hell. You should check out Sweden. They've got this business of controlling everything you do for the "greater good" down pretty well. You should do a little research and see what it is you're wishing for.