New Delhi, March 16 (ANI): Cricketer Gautam Gambhir flagged off a colourful bike and cycle rickshaw rally in New Delhi, in a bid to raise awareness about Cancer on Sunday. Environmentalist Sunita Narain was also present while flagging off Mega Cycling Carnival 2014. The participants along with kids who were either cancer patients or survivors turned their bikes in to the carnival float, donned their best of wardrobes, and joined the fun of whizzing down the track. Defining the significance of the event, Gambhir said that more people should participate in such events that address social causes with a tinge of fun.