Schumacher made the comments in Brazil, where he competed in a charity karting race hosted by former Ferrari teammate Felipe Massa.
When asked by local reporters whether he would be back in F1 in 2010, the German told the Terra Web site and other media: "Who knows?"
Schumacher said on Sunday he has recovered from the neck injury that kept him from attempting a temporary comeback with Ferrari earlier this year.
Massa and Schumacher completed a one-two finish in the kart race. It was the Brazilian’s first competitive event since his life-threatening accident in July.
Race organiser Massa, who suffered a serious head injury during qualifying at the Hungarian Grand Prix and missed the rest of the Formula One season, won the race.
Be the first to comment