IN 1857 and thats a good 140 years ago the Fairy Queen hauled British troops to Raniganj in the first Indian War of Independence. Today, the Indian Railways is gearing the 1855-built steam locomotive to cart $500 paying tourists from Delhi to Alwar in Rajasthan in six hours. The 26-tonne locomotive, refitted in the Perumbur workshop at a cost of Rs 4 lakh last August, is the oldest preserved steam locomotive in the country and the first exhibit at the Railway Museum that opened in 1971. Once the commercial runs start, it will also be the oldest running locomotive in the world on a mainline.