NANO technology

ya rite reva is d smallest car but the main problem is the battery life & if we buy dat car where do we recharge the battery & how gud is the performance of d car. also mahindra is gonna come out with their car in mid sept which is similar to nano.

You may be right about the smallest commercially produced car, atleast here in India. One more small car is due to come out from Rajkot which will be even cheaper than the Tata Nano - but it may take 2 or more years to come to commercial production. It is going to be a battery operated car like the Reva.