<div> <p>What’s the difference between a ‘Test Driver’ and a ‘Reserve Driver’? Well, who better to answer that than Cadillac Test Driver Colton Herta and Reserve Driver Zhou Guanyu?</p><p>Colton and Zhou join Christian Hewgill ahead of Cadillac’s first home race in Miami to answer your questions about Formula 1.</p><p>How does F2 compare to Colton’s previous career in IndyCar? What’s it like working with Valtteri Bottas and Sergio Perez? Who replaces a driver if they are injured or ill? How close is simulator performance to the real car? And why do drivers sometimes plunge themselves into ice baths after a race?</p><p><a href="mailto:[email protected]">Send your F1 questions to [email protected]<br></a><br><strong>Experience F1 live in 2026</strong><br>Book your seat for a Grand Prix this season at <a href="http://tickets.formula1.com/">tickets.formula1.com<br></a><br><strong>Listen to more official F1 podcasts</strong><br>In-depth interviews on <a href="http://www.podfollow.com/f1-beyond-the-grid">F1 Beyond The Grid</a><br>Expert reaction before and after every Grand Prix on <a href="http://www.podfollow.com/f1-nation">F1 Nation<br></a><br></p></div>