Sir I want to book for a nano car with power steering and

Sir, I want to book for a nano car with power steering and A.C. I contacted the SBI and they told that not all the branches are authorised for that booking of nano. Then they told it will be available even with the authorised banks only from 9.4.09.

Can anyone guide me how to book for nano with A.C. and power steering immediately. How can i book the Nano car online? please send wholedetails. with prices of all nano models with facilties justyfing the price.

Thanks. partha.