Fernando Alonso's had quite a 24-to-48-hour period.
"Not much running in traffic, so still the thing that I need to go through in the next couple of days, so that is something we need to chase tomorrow in the program".
"But the auto felt as good as it did at the test, and I was able to make some setup changes without losing the confidence in the vehicle".
Alonso was followed closely by fellow Spaniard Oriol Servià, who set an average speed of 220.759 miles per hour on his fastest lap. I was able to start driving the vehicle today. "Still a long way for me to work and to learn, but definitely I feel some good steps today".
For Alonso, it's just the start of a two-week cram session.
Unlike his fellow competitors, especially later in the week, Alonso won't expend much energy on preparing for this weekend's two days of qualifying. "Then to use the performance of your vehicle in which moment of the race (and) why". The early forecast doesn't look as if it will wash away any of that on-track time.
Alonso had hoped to start to build experience running in traffic in the final hour of practice by running with his four full-time Andretti Autosport teammates.
A four-hour test session for all competing drivers followed the two-hour rookie and refreshers test.
There are other potential obstacles, too.
Less than two weeks ago, Alonso made his oval debut at the historic 2.5-mile Brickyard in a solo test.
It was significantly warmer today than it was on May 3, by more than 20 degrees ambient and similar range in track temperatures. Andretti and Dixon both use Honda engines.
Sebastien Bourdais was P4 ahead of Ryan Hunter-Reay, with Graham Rahal sixth for RLL Racing. He was third at 224.969.
"I think he's more prepared than most rookies, to be honest", Marco Andretti said. "I'm looking forward to sharing this experience with Mike, Michael (Andretti), all of our partners and everyone else who has come together to make this opportunity possible".
After answering nine questions, most of which could be paraphrased as such: It's great, I'm learning a lot, and I'm enjoying myself, he hopped on his skateboard and rolled back to Gasoline Alley without a care.
He put in just 20 laps while most drivers doubled or tripled that number. Last year, rookie Alexander Rossi won the race for Andretti's team.
Having flown overnight from the Spanish Grand Prix to Indianapolis, Alonso climbed into the orange McLaren-Honda-Andretti auto on Monday morning.
McLaren Technology Group executive director Zak Brown is even adding exclusive material on Alonso on the Motorsport Network web site this month, to help global fans track what is expected to be a steady progression that might not be a one-shot deal. The 101st running of the 500 is set for May 28.