"Obviously, they [Magnussen's Chip Ganassi team] were unlucky with the puncture five laps from the end but he absolutely loved it and he was very happy that he could fight for a win.
"He did a brilliant job there and sharing a car with a team-mate is definitely something I would love to do. Le Mans is up there on the list as well as Sebring, Petit Le Mans and the Daytona 24 Hours. Many, many races that I would like to compete in.”
On whether he had an option to enter endurance racing this year, he added: “I won’t give much [detail], but there were a few talks, a few opportunities.
"Some in endurance, some in Formula E and IndyCar. But definitely, IndyCar was the choice in my heart and I really wanted to go there because I feel I can have fun and enjoy my racing time which I have not enjoyed in the last few years."
Another experienced rookie in IndyCar this season will be seven-time NASCAR champion Jimmie Johnson at 45 years of age.
With Johnson 10 years Grosjean's senior, the former Renault, Lotus and Haas driver was asked whether IndyCar was a long term commitment, to which he replied: “In all fairness, I don’t know.
"It could well be. What I want is to be happy and to enjoy my time in racing and if I do, then most likely I would stay longer for sure.
"If things don’t go to plan for any reason, then I would come back to Europe. But I think it is going to be great.”
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