Former F1 racer threatens to sue to overturn superstar Lewis Hamilton's 2008 championship

Felipe Massa is escalating his legal fight to overturn the result of the 2008 F1 championship.

The Brazilian driver says the 2008 Singapore Grand Prix was a race-fixing plot dubbed " Crashgate" Massa : "I'm fighting for the justice of the sport — to have the trophy" His team says former F1 boss Bernie Ecclestone and former FIA race director Charlie Whiting knew more about the cheating scheme than they let on at the time.

Massa says he's not accusing Hamilton of any wrongdoing and that he hasn't spoken to the seven -time champion about the case.

Massa said he would encourage Hamilton to re-evaluate it, given the Briton ’s advocacy against injustice.

Ecclestone is shrugging off his earlier remarks, and Massa 's team is left without cooperating witnesses at the highest levels.