There was no time to waste when the track opened at 11:00 am. All 33 drivers were out Friday.
Ryan Briscoe's car briefly caught on fire during Friday's practice. The safety crew put it out and Briscoe got out safely. He should still be okay to race on Sunday.
Takuma Sato had a smoking engine in the pits, but he was back out quickly and up to speed.
Ana Beatriz ran into back of Carlos Munoz. Her car had a bent front wing but there was no serious damage.
EJ Viso was the first driver over 225 mph, but Pagenaud ultimately had the fastest lap.
Pole sitter Ed Carpenter says he has no big plans for Carb Day. He was just getting a few laps in to make sure everything is okay for Sunday's race.
"If you're waiting to make changes and finalize things on Carb Day, I think you're probably behind at that point. We're happy with where we are with the car. Everything's been taken apart and gone through since qualifying so Carb days' really for us just a shakedown. We check everything and make sure everything's happy," he said.
We also talked to Katherine Legge, who is 33rd in the line-up, about not getting lapped within the first ten or so.
Legge says staying on lap will be "massively important. I think I'm just gonna hang back and see how it all plays out and then I'm gonna pick 'em off one by one and keep putting a buffer between me and the leaders."
That's the perspective from the back and front.
Meantime, Ireland's Peter Dempsey beat Firestone Indy Lights points leader Carlos Munoz and three other drivers down the front straightaway Friday to win the closest oval race in Indianapolis Motor Speedway history by 0.026 seconds over Colombia's Gabby Chaves.
Dempsey started to make an inside move, then steered outside as the cars came down the final straight four wide, overtaking the other three cars just yards from the finish. American Sage Karam, the pole-sitter, was third.
Munoz of Colombia took the lead at lap 13 and appeared headed to another Lights' victory until the final yards. Munoz was trying to become the first driver to win both Memorial Day weekend races at Indy. He finished fourth Friday and will start second, the middle of the front row, in Sunday's Indianapolis 500. He's the first Indy rookie to be on the front row since Colombian Juan Pablo Montoya in 2000.