What we can read into Alonso's 2018 IndyCar test

Fernando Alonso has completed his first test in the new-for-2018 spec IndyCar, but his plans for next year still aren't confirmed. Glenn Freeman is joined by Autosport's Grand Prix Editor Edd Straw, and US correspondent Tom Errington, to get the latest on the Spaniard's future, as he moves on from F1 at the end of this season.