tatapeoplescar.com — The Tata Rs 1-lakh car is here! And it's called the Nano! Tata Group chairman Ratan Tata on Thursday unveiled the Tata Nano at the 9th Auto Expo in New Delhi. Nano, the world's cheapest car, costs almost half of the cheapest car currently available anywhere in the world. Since, a promise is a promise the standard dealer version will cost Rs 1 Lakh.