Following a poor final restart, Ericsson was applying pressure to leader O’Ward in the closing stages of Sunday's race when the Mexican ace suffered what was described as a “plenum event” that briefly zapped the car’s power under acceleration from the final turn.
With Ericsson just 0.6s behind, the delay was enough to see the reigning Indy 500 champion claim the lead with four laps to go, before going on to seal the victory.
