The eight-city tour to promote his dream project "RA.One" has left Shah Rukh Khan tired and exhausted, but the emotional bond with the film and reaching out to his fans is keeping the superstar alive, energetic and kicking.

"I am extremely exhausted and tired. It is because I am not just promoting the film, I am also doing the post production of 'RA.One' at the same time. Even though I have private planes to travel and five star hotels to stay in but I have been working round the clock," Shah Rukh told reporters here Thursday.

The 45-year-old actor was in the capital to facilitate real heroes of Delhi, who in their own way have selflessly contributed to the city to make it a better and safer place to live in.

Though the star arrived an hour late at the unusual venue - Shivaji Stadium Airport Metro station, the enthusiasm and screams from the crowd, a "Chamak Challo" jig by the superstar lit the boring grey and white structured walls of the station with colours of joy and happiness.

Wearing a pair of jeans, a black T-shirt and a red stole around his neck, his hair was neatly tied in a ponytail and though his eyes looked tired, his body and energetic gestures overcame all that.

This mega-budget film is taking Shah Rukh to cities he has never visited before, and very modestly the actor says all his promotional activities are targeted to inform the audience about this film.

"I am a small time actor who is struggling to make his audience like his movie. People don't know what they want till they see the film. So the idea of this activity is to inform people that there is a superhero film, so by the time they go to the cinema halls to watch the film, they are already aware what it is all about," he said.

"The film comes straight from my heart and I believe in it. I have made this film because I wanted to, so why should I be scared of the outcome. In 20 years, you have given me status where I can think of spending money," he added.

Directed by Anubhav Sinha, the film also has Kareena Kapoor and Arjun Rampal in the lead role. It is set for a Diwali release.