Mechanics work on a vehicle that will compete in the 2015 Dakar Rally, in Tecnopolis, in the town of Villa Martelli, 10km from the city of Buenos Aires, capital of Argentina, on Jan 2, 2015. Competitors will travel 9,200km from Jan. 4, leaving Buenos Aires to cross Argentina, Bolivia and Chile and return to Buenos Aires on Jan.17. to complete the rally. (Xinhua/Martin Zabala)