Korean pop singer/actor Rain is heading for Hollywood. He has confirmed earlier that he will begin this summer filming "Speed Racer". Oscar-winning actress Susan Sarandon will also star in it. Sarandon, 60, will appear as the mother of the title character, a young racing car driver played by American actor Emile Hirsch, in a cast that will also include actress Christina Ricci of "Monster" fame and John Goodman.