The interior of the Tata Group's newly launched "Nano" car is seen at the 9th Auto Expo in New Delhi January 11, 2008. Two wheeler prices are likely to slide and banks' car loan portfolios are set to rise from October when millions of consumers start buying the world's cheapest car, the "Nano", made by Tata Motors, a survey said on Friday. REUTERS/Vijay Mathur (INDIA)