CHENNAI, India — India's infrastructure presents a frightening scenario, and some feel it is at the breaking point. One reason for this is that the world's cheapest car is about to hit Indian roads. The Nano's most basic model is pegged at $2,600 — only a little more expensive than a motorcycle. It is aimed at capturing a significant part of the two-wheeler market, fulfilling the dreams and desires of those who want to travel in the comfort of a car.

But this convenience comes with a penalty. Broadcasters warn of road congestion, particularly in cities and larger towns, that will worsen as Nanos replace motorcycles.

Road space in Indian cities is woefully inadequate: It is 18 percent of total city area in Delhi, 11.9 percent in Bangalore, 10 percent each in Mumbai and Chennai, and 6 percent in Kolkata. Ideally, road space should be closer to 30 percent.