The motivation behind the "Glass Tank" is simple: create a vessel with a seemingly endless supply of alcohol. The only problem is that this particular design may not be the best way to achieve this goal.
Apparently, air pressure and water pressure ensure that a consistent amount of fluid from the tank runs into the glass as the user drinks. I can see how that might work, but it doesn't take a genius to realise that a glass vessel like this one would probably snap at the stem like a twig when tilted only slightly (a serious challenge for the tipsy drunk). My suggestion is to drink straight out of the bottle or, if you are a more civilized alcoholic, buy one of those giant glasses that can hold an entire bottle of wine. Not surprisingly, the Glass Tank is only a concept. [Kyouei via Trends Now via DVICE]