The Frenchman said the merger with the Indy Racing League ( IRL ) had effectively killed off the series he once dominated .
The Frenchman will make his grand prix debut with Toro Rosso in Australia on March 16 .
The Frenchman , who will make his grand prix debut with Toro Rosso in Australia on March 16 , said the merger with the Indy Racing League ( IRL ) had effectively killed off the series he once dominated .