Williams driver Felipe Massa says he will race in Formula E when he eventually exits Formula 1.
The Brazilian retired from F1 at the end of the 2016 season, but was asked to come back for 2017 to replace Valtteri Bottas, who made a late switch to the Mercedes team to replace outgoing champion Nico Rosberg, who announced his shock retirement in December.
Massa agreed and has even suggested he could stay with Williams for another year, but admitted during the Monza weekend that a switch to the all-electric Formula E series is on the cards, when he does eventually call time on his F1 career.
"Yes, Formula E," he replied when asked if he had post-F1 plans. "But I don't know when."
Massa has already completed a test with the Jaguar FE team after approaching them about a drive for the 2016/17 season, before he agreed to rejoin Williams.
"I did a test with them. When I decided to stop F1, I was talking with some teams and with Formula E," he added. "I wanted to see the car, I wanted to drive the car and see how it is. I did a test with them just to see how it is.
"You cannot compare [it to F1]. It's completely different but it is still a competition.
"[There are] some great ideas for the future and the championship is growing. I think it's fantastic, and I see a big future in that category for a driver, especially after F1."
Massa has yet to decide when he will join the series, with that decision heavily dependent on how he feels about F1 and whether or not he is happy with his and the team's performance.
"I need to analyse everything and then decide what is my option for next year and if the options I have are making me happy," he explained.
"I feel that I am competitive. When you see you are competitive and are doing a good job in the car, that really motivates you. But it's true I don't want to be in F1 to be at the back, I want to have a proper job and this is part of my ideas for the future."
