Rubens Barrichello has admitted being baffled that Ferrari team-mate Michael
Schumacher will race on after winning his sixth drivers' crown last season.
Barrichello wonders what else Schumacher can achieve
Hinting he thought Schumacher might retire, Barichello said: "If it was me I know what I would do.
"But I don't know what goes through his mind. If he still has the will to
race, to win, then he should continue."
Meanwhile, Barrichello is still hoping to renew his deal with Ferrari - his current contract runs out this year.