This tells how rapid is the technology evolving.Chennai based Restaurant runs on Robot as waiters no separate man waiters are present. You need to order your food through your mobile or tablet. A robot comes to you bringing the hot and spicy food you ordered.
These robots are imported from china and japan and the whole process is automated. Hey don't worry you don't need to tip them.
It looks like you have entered into robot planet. Tech revolution of robot has already started.Here is the quick wrap video of how it works.