This makes the A380 look small 

http://www.msn.com/en-gb/money/technology/this-futuristic-airliner-could-carry-800-people-and-be-powered-by-hydrogen/ss-AAc9zAk?ocid=U305DHP#image=6

Some pretty radical design there.

DD, do you think it will ever be made ?

Not sure if we will see one in that exact form or size, but aircraft designers are really looking at pushing the boundaries right now so you never know.