Jarno Trulli has hinted at a motorsport comeback after signing up for the Formula E drivers' club initiative, along with fellow ex-Formula 1 racer Nick Heidfeld.
Trulli has not raced at all since parting company with Caterham on the eve of the 2012 F1 season.
The 2004 Monaco Grand Prix winner is one of four new additions to FE's list of driver candidates.
Heidfeld, Sam Bird and Jerome d'Ambrosio complete the latest quartet announced by the FIA's new all-electric series on Wednesday.
"This series has huge potential and I'm excited to see the technological progress of electric vehicles and their place in the future of motorsport," said 39-year-old Italian Trulli, who contested 252 grands prix with Minardi, Prost, Jordan, Renault, Toyota and Lotus/Caterham between 1997 and 2011.
Heidfeld has driven for Rebellion in the World Endurance Championship since his F1 career ended in mid-2012, while Bird narrowly missed out on the 2013 GP2 title but only has PC class outings with Starworks in the United SportsCar Championship confirmed for 2014 at present.
D'Ambrosio spent a season in F1 with Virgin in 2011, and is also a former test and reserve driver for the Lotus F1 team.
The FE drivers' club is a means for racers to express their interest in competing in the series, which commences in September this year, and to get testing opportunities in its Spark-Renault car.
Trulli is the first GP winner to announce an FE interest, and one of 16 ex-F1 racers on the now 40-strong drivers' club list.
Lucas di Grassi and Daniel Abt are the only drivers to secure firm FE deals so far, both with the Audi-backed Abt team.