GPS turn-by-turn directions

I was going in a friend's car a couple of months back in Hershey, PA when we had GPS giving us directions to some place. Its the home town of Hershey chocolates and its a small town pretty much everything named after Hershey. Anyways to the main topic - the GPS was giving pretty good directions including saying where a traffic bottleneck is and what alternate route you can take.. I came back from US in 2 weeks and I wanted to go to M.G.Road from the old Airport Road in Bangalore. I was just thinking how cool would it be if I had the GPS giving me directions for the best route until reality struck me. The GPS would probably say "Brrrrrrrr... r u mad.. just go back home" or "there is no way out without having a lot of traffic do you really want to go" or if I wanted to really go it would say "take a u-turn, go home.. take a u-turn, go home"..

Anyways.. i am convinced GPS won't work in bangalore.. u just cannot bear its pleading and still continue going.