Hydrogen is a carbon neutral fuel. Solar electricity prices in India have already fallen below the affordable price (≈ INR 5.00 per Kwh to generate 0.041 lb/Kwh hydrogen which is equivalent to 0.071 litres of petrol in terms of lower heating value) to make hydrogen economical fuel by sourcing from electrolysis of water to replace petrol/gasoline as transport fuel. Vehicles with fuel cell technology based on hydrogen gas are nearly twice more efficient compared to diesel/petrol fueled engines. Hydrogen can be generated cheaply by splitting methane using electricity without emitting any green house gas and also extracted from wood gas produced from carbon neutral biomass. A luxury FCEV car generates one litre of bottled quality drinking water for every 10 km ride which is a significant by product. Also FCEV does not emit any particulate matter but removes particulate matter up to PM2.5 from the ambient air. Any medium or heavy duty vehicle can be retrofitted in to fuel cell vehicle as its system power density (watts/litre) and system specific power (watts/kg) are comparable with that of internal combustion engine. The cost and durability of fuel cell engines with economies of scale production line are comparable with the petrol/diesel engines.