Watch full movie online. Senna: The Test (2017) explores a unique moment in Ayrton Senna's career when, on December 20, 1992, he tested a Penske IndyCar in Phoenix, Arizona. Amid frustrations with McLaren, Senna briefly considered switching to IndyCar, with this test marking his only serious exploration of American racing. The documentary, created by Marshall Pruett and Travis Long, features insights from figures like Emerson Fittipaldi and Rick Mears, capturing this rare event in Senna’s life and his motivations during a challenging period in his career.