(Source: BBC Earth Watch)

So far, just about everyone seems to love the self-styled “world’s cheapest car”, the Tata Nano.

Writing on these pages, Indian motoring journalist Hormazd Sorabjee writes that “It thrilled me with its ‘proper car’ feel”; while for Adil Jal Darukhanawala of zigwheels.com, “The Nano has the makings of a mega winner.”

And what’s not to love? A five-seater car that does about 20 km per litre (that’s 56 MPG in old money) and costs $2,000 – come on! – and it’s not the end of the line, with Bajaj, the company that principally populates South and Southeast Asia’s roads with auto-rickshaws, planning to launch its own tiny car (the Pico?) within two years.

Just about the only people sounding a cautionary note on the tiny Nano’s giant appeal are environmental groups, notably the Delhi-based Centre for Science and Environment (CSE).

They judge it inappropriate for Indian cities, choked by traffic, where jams mean a journey across town can already be measured in hours.

“Cars may drive growth and aspirations, but they can never meet the commuting needs of urban India. Cars choke cities, harm public health and guzzle more oil.”

CSE’s simple prescription is more investment in mass transit schemes.

Although one can see the logic of their argument, it’s hard to imagine it prevailing.

Many Indian cities already have swarming bus networks and suburban rail networks. They’re slowly being supplemented by true mass transit rail systems – up and running inCalcutta and Delhi, under construction in Mumbai and Bangalore.