how is it posible , 2.5 to 3RS/KM ,,,,,,,,,,,,,,,i have noticed that when my cultus cylinder is full empty then at that time it may need atleast 750 to 800 Rs to full it up,,,,,,,,,,,,,,,,,,,,,,,and car covers not more than 170 Km in one cylinder,,,,,,,,,,,,,some wont exceed more than 150Km ,,,,,,,,,,,,and with AC it even drops ,,,,,,,,,,,,,,i belive it will cost atleast 5 Rs per Km