People are worried about nano congesting streets in India. In Mumbai, public transport has not been upgraded for long long time. Rail capacity, after all the articles in papers, boycotts on human rights day, has not increased by 0.1%. Govt has to invest lots of money on railways, and buses and fast. In mumbai, govt has not completed a single flyover in 9 yrs and there is no will power to upgrade rail infrastructure. Only increse in public transport systems will reduce load on roads. Else load will increase even if there is no nano. So one cant blame tatas for coming up with the car. technology will come up with something everytime.