Cool in theory, VERY hard to do in actual application I think.
Have you researched the cost of POS (point of sale) equipment? How about back office software for it? How hard it is to program and maintain?
How about tracking food and labor?
What about all the laws reguarding labor, liquor, fire, and health codes?
Have you thought what rent will run you for a trendy enough location to support this type of customer?
Who will you buy your food through?
How much fresh food will you keep on hand?
How much money do YOU think it will cost to start something like this up?
What do you plan to do when you get sued for food poisoning or when somebody slips on your sidewalk and brings a lawsuit against you?
How do you plan to pipe in the music? Do you know the costs associated with distributing music in a retail location?
I hate to sound like a prick, but many people fancy thoughts of starting up restaurants. Let me tell you, it's not easy. Not at all. One of the number one business failures is table service restaurants. People think they are good money makers, but really don't know much about it other than they serve food.
If you have no restaurant industry experience, I suggest you gain some. Owning and operating a restaurant is very, very complex.