Possible Clues:

• Motoring organisation provides greeting on Internet - it explains recent good form
• Ethnic group eccentric’s source of information on course
• Rush clown presumably gave indication of potential winners at the Circus in Rome, for one
• Rush clown has form worth reading about on the flat
• Controversial thing to play
• Rush clown tells readers about the horses
• Could be black and white and red say at the Curragh
• Super vehicle blocking road — something you might see at Goodwood
• Fairly stiff programme of course
• Programme for meeting that's played for ethnic advantage?