Mclaren has raced at the Indy 500 in the past, winning in 1974 and 1976.
VOTE: Who should replace Fernando Alonso in the Monaco Grand Prix?
The move comes as current McLaren CEO looks to expand the team's brand, casting a wider net over the racing world as a move into the American market could represent a new era in racing driving. "But I'm not afraid of trying".
Button was widely expected to take Alonso's seat at Monaco. It's a win-win situation. "It's good to go to America and showing this respect to IndyCar". Alonso's team, McLaren, actually worked out a deal with Andretti Autosport to get Alonso in the vehicle for the race, but that might not be the end of McLaren's IndyCar ambitions.
He won the showcase race in 2009 on his way to the title with Brawn GP. McLaren's vehicle is good enough at disappointing us all on its own. "I believe if a driver commits to a team, it's a bit like disappearing with another girlfriend halfway through the year and then coming back, it doesn't seem the right thing to be doing".
"There were two options".
"I've won the race before, in 2009, and it's one of my all-time favorite racetracks", he said.
Boullier is excited at the challenges facing Alonso. "I don't know if it will be next year or the following years".
McLaren is back in the Indianapolis 500 for the first time in 38 years with Alonso's entry, a Dallara DW12 chassis run by Andretti Autosport.
"In the end, this is a good solution and this is a good opportunity to do the Indianapolis race".
Formula One: Who will win 2017 Drivers' Championship?
"But I don't like to see him at the back of the grid anyway". "He sees motorsport differently", Alonso said.
"It also reflects the technical versatility of McLaren and Honda and it underlines the fact that we're racers, above everything else".
Alonso, however, is realistic enough to know that, under better circumstances, he would have been racing in Monaco.
"Definitely, it was something on the table this year", he said.
"Or I can win different races in different series in moments in my career and be a driver that can race and win in any vehicle in any series".
"Firstly it is great that a driver is able to do it, we should be allowed to do more than one series", he said.
If he doesn't, it won't be for a lack of talent, three-time Formula One champion Lewis Hamilton said.
F1 drivers up and down the paddock spent much of the off-season in grueling training camps in preparation for the high-downforce conditions that come along with new regulations.