NBC broadcaster Leigh Diffey joins Marshall Pruett for a packed Week In IndyCar podcast following the Iowa Corn 300 won by James Hinchcliffe. With Harding Racing making a driver change to Conor Daly for Toronto, Santino Ferrucci’s F2 meltdown, NBCSN’s Paul Tracy championing IMSA ace Colin Braun as an IndyCar driver in waiting, the IndyCar interest held by DragonSpeed Racing, odd developments at McLaren, the Rahal team looking to run three cars in 2019, and more great listener questions, Diffey and Pruett cover plenty of ground in the latest episode.

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