IndyCar is an “option”, but for now focus on Europe

De Vries, who is defending his Formula E champion, was able to take advantage of the IndyCar driver’s assessment days in Sebring last December when Meer Shank put him in a car for a one-day test in Sebring.

De Vries was the fastest, ahead of Colum Helot in the Juncos Hollinger-Chevrolet, Stoffel Vandorn in the Arrow McLaren SP-Chevy and Jack Aitken in the Ed Carpenter Racing-Chevy.

At the time, team founder and co-owner Michael Shank told Motorsport.com: “He was very impressive. His feedback has been very, very good – you could say he’s been in really professional organizations for the last four to five years – and he’s confident and he understands the terminology we use and he just sticks to it. ”

Looking back on today’s test, De Vries told Motorsport.com: “Mayer Shank were great guys. This is a completely different form of racing in the US. I would say it’s almost comparable to Formula 2, given the fact that everyone has the same cars. Obviously, there are different engine manufacturers.

“I would probably compare it to Formula 2 in the sense that the basics of the equipment are the same. And then it’s a matter of teams to make a difference, and obviously the machine is a little faster.

“But also in terms of feelings I pretty quickly felt at home, I admit it was very physical. And then Americans, you know, love shows and racing, and it’s very clean, which is sometimes refreshing.

“At the same time, I also love the professionalism, the technicality and the look of the complex elements of Formula 1, Hypercars and Formula E because they all have their problems. So it was a great experience and that’s definitely what I take with me.

“It was the main goal for me to go there to see what it’s like to feel the environment and really understand if it could be a significant option for my future. And I think so, but at the moment I’m in Europe in Formula E [with Mercedes] and part of Toyota [WEC] too.

“So I need to see how the next few months develop, and then, I think, at some point I’ll find out what my future will look like, at least in the medium term.”