TATA Motors have not yet come out with the official numbers of Tata Nano booking. But its wide spread that the numbers have crossed one million.
TATA Motors say that the official numbers will come in few days, they are in the process of counting the forms.
Even the banks which took Nano financing and booking didn't give the numbers.
The only source giving the number was carwala.com which accepted the booking of NANO online. Carwals has booked around 10,000 cars from around 500 cities.
Out of these 10K bookings 55% of the bookings have been done for the top version and 25% and 20% for middle version and the base model respectively.
I will update the exact number of bookings as soon as the company comes out with the list. Be a backed for it!