Shah Rukh works for 28 hours at a stretch!

Superstar Shah Rukh Khan has set an example with his dedication to work -- and he proved it once again after he worked for 28 hours at a stretch without taking a break.

The actor, who is the brand ambassador of Hyundai, shot for an advertisement for the car brand, and after wrapping it up, he went straight to rehearse for his performance for the forthcoming Colors Screen Awards.

He practised till the wee hours of Thursday morning, said a source.Following his rehearsals, the 47-year-old, who is also busy shooting for his production venture "Chennai Express", with director Rohit Shetty, spent three hours discussing strategies around the release of the movie.That is some dedication!