so here is your separate thread about your trip. will you please tell me why you chose tata nano for the trip?
my max distance is 450 km in a day and that is from Coimbatore to kanyakumari (my home town ). i didnt face any problems during the journey. i was in 70-100 kmph range and the average mileage was 28kmpl. (approx full tank of petrol).
only thing i felt with nano on long trips was the petrol pumps. the route which i chose didnt have any petrol station for almost 50 or 100 km. so i was little feared when the fuel indicator bars drops. and every friday evening i come back from kollam to my hometown and on sunday noon i get back there. so far no issues at all. BTW
are you planning the trip with family/friends/ alone?