Throttle Therapy with Katherine Legge

Description Katherine Legge is joined by Dr. Julia Vaizer, medical director for IndyCar and the Indianapolis Motor Speedway and the first female medical director in IndyCar history. Vaizer explains how early motorsports fandom and a MotoGP tragedy pushed her to merge racing with emergency medicine, leading her to become the first fellow in the Motorsports Medicine Fellowship and later IndyCar leadership. They discuss how IndyCar medical teams coordinate with other series and specialists, research projects like safest driver extrication and analyzing IMS patient data, and what race day at the Indy 500 looks like.
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Katherine Legge recaps her month of May and her Double Duty attempt. After a Watkins Glen NASCAR Cup return, she joined a newly assembled Indy 500 program, praising the crew and describing setup struggles, conservative downforce choices, and qualifying 26th/27th after drawing last in line. She reveals the travel disruptions that caused her to miss Indy obligations, the behind-the-wheel perspective from the end to her Indy 500 race, and car challenges during the Coca-Cola 600.
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Katherine Legge welcomes Marshall Pruett back for a part two focused on IndyCar’s underlying state, who holds power, and how series decisions mix racing, business, and politics. They discuss IndyCar’s demographic, the push to “youthify” via digital platforms, and what IndyCar, IMSA, and NASCAR can learn from each other about cars, drivers, and event presentation. Pruett explains how he evaluates rumors, PR spin, timing, and when to withhold accurate stories to avoid undue harm.
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Headed into Memorial Day weekend and her Double Duty attempt, Katherine Legge welcomes NASCAR champion Kyle Larson. Kyle recounts his racing upbringing, starting at age seven in Northern California racing dirt “outlaw carts,” moving into sprint cars, USAC midgets and Silver Crown, and transitioning to NASCAR. Kyle shares his experiences attempting the Indy 500–Coca-Cola 600 double, covering logistics, pressure, weather disruption, and the IndyCar hybrid learning curve, and gives Katherine advice on her attempt.
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Katherine sits down with her manager, Klint Briney, for a candid conversation about chaos, crisis management, sponsorship politics, impossible timelines, and why attempting “The Double” sounded like a good idea.
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