Fantastic thread rksingh1 . A real eye opener. However, I was wondering, for the calculation of fuel cost for 6 years, how can you keep the cost of petrol and diesel the same? May be we should see the annual increase in the cost of petrol and diesel for the past 5 years and apply the same too? I presume, six years from now, petrol may cost Rs.200 per litre whereas diesel may be Rs.110 litre? Steep rise in petrol price is one thing that we should not miss!