I like it, the novelty is cool. The only thing worth mentioning is that in Dubai, every restaurant will deliver, pretty much any distance (at least way farther than here in the states). Im talking about burger king, taco bell....any place at all.
I figure the regular delivery restrictions here will make this a little less of a splash here in the states.
It would probably work like gangbusters on a college campus. Soooo many drunken college kids pushing the button.