I don't foresee this law lasting. It will get petitioned and destroyed in referendum.
It's getting to the point where "government" is becoming shorthand for "waste of everybody's damn time."
You know, this is a really bad thing because if you ever need to supply anyone with a decent urine sample just drinking a big gulp sized beverage aids that sufficiently.
Pretty sure there's more fanatic cigarette smokers than soft-drink guzzlers and that didn't help them overturn the smoking-in-bar ban (and now that's pretty much global).
There's a difference though. Smoking is disgusting and affects the people nearby through second-hand smoke. The only person affected by having a large soda is whoever is drinking it.