Its really goog car, but if it has made for common people its running cost should keep low. The car should made to run on CNG/ LPG fuel. The car have not been equipped with tail door, it is not at all expensive to provide tail door. The tail door may be provided. There should have provision for power window for all 4 windows and electronics central lock for all 4 doors.
Moer insulations are necessary to protect the back sits from the radiated heat. of the engine. Top speed may be increased to 120Km/hr.It is really high tech car. So new version of Tata nano should come up with battery / air.as fuel of the car. Then it will be real peoples car for Indian.
Govt should also give subsidy and Tax exemption for using non conventional fuel.