Ace kollywood actor Sarath Kumar has replaced Kamal Hassan in the tamil remake of mollywood flick, Traffic.  "Kamal could not do the role because of problems in dates, as he is busy with Viswaroopam. Director Rajesh Pillai has signed up Sarath Kumar for the movie. It will hit the floors soon, as the director is at present busy with its Hindi remake, starring Sunny Deol and Prakash Raj in pivotal roles. Prakash Raj may be part of the Tamil version too.", said close sources. Kamal who was impressed with the malayalam version of the flick wanted to be part of the Tamil remake, but is caught up with Viswaroopam work.