Andretti to miss Miami race

The 27-year-old turned out for Andretti Autosport in Buenos Aires last month, his series debut, but is unable to compete in the March 14 race..

Andretti has IndyCar obligations to fulfill, with the 2015 season kicking off on March 29.

It is not yet clear who will replace the American, although Matthew Brabham seems the most obvious option, with the 20-year-old having turned out for the team in rounds two and three.