Bollywood Actor Imran Khan was spotted dancing in a flash mob in Mumbai where he was present to promote his upcoming animated film Rio 2. Imran who has lent his voice to the cartoon character, was happy to be a part of the flash mob. Rio 2 is an animated film which is dubbed in Hindi by Sonakshi Sinha and Imran Khan and is slated to hit the theaters on 11th April.@nstv