Ex-Formula One driver Franck Montagny feared his racing career could be over after revealing yesterday he had tested positive for a derivative of cocaine at a round of the new Formula E electric series.

“Auto sport is maybe over for me,” the 36-year-old, who raced seven times for the now-defunct Super Aguri Formula One team in 2006, told French sports daily L’Equipe.

Montagny, who drove for the Andretti Autosport Formula E team, tested positive at the Malaysian round of the series in Putrajaya on November 22.

He missed the subsequent race in Punta Del Este, Uruguay, and said at the time that his absence was due to health reasons.

The driver, who did not contest the test result, is awaiting a sanction from the governing FIA.

“I knew, in my head, immediately. I knew it was over. I got on the plane...then I called my parents, to explain. I was ashamed,” he told the newspaper.

“I made a stupid mistake, I am guilty.”

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