Andretti's son, Jarett, was a USAC sprint car driver and later a driver in the GT4 America Series. Jarett likes to keep his personal life private hence information about his dating life is not available. [8] In April 2017, Andretti disclosed that he had stage four colon cancer . It is therefore not known whether he is married or has any children. However, this information will be updated as soon as it is available. The Andretti racing family has experienced bad luck when it comes to the Indianapolis 500, a famous automobile race in Indiana. Mario won it in 1969, but then never managed to win it again and eventually retired only having won once. Jarett Andretti Wife. John gives credit to Michael Andretti, Jarett’s godfather and owner of Andretti Autosport, for putting the plan to get Jarett to drive Indy Lights in motion. [9] His sons, nephew, and grandson have been unable to …