Castroneves went on to score the fourth, record-matching Indy 500 win of his career, while Palou finished half a second down, but believes he learned a lot during his battle with the Brazilian veteran.
"There was a lot I was able to learn just because it was my first time doing some stuff like defending, trying to leave a gap [to the car in front] and then getting a good run down the straight to the next turn," Palou told Autosport
