Lewis Hamilton will begin the new season as favourite to defend his crown . But ##rick Coulthard has questioned his focus ahead of the 2015 campaign . Hamilton has been in - demand away from the circuit over the years and he is also in the closing stages of negotiating a big - money deal with racing . The race gets underway on Sunday when Melbourne plays hosts to the season - opening Australian Grand Prix . com HERE for all the latest F1 news .
Lewis Hamilton will begin the new season as favourite to defend his crown . But David Coulthard has questioned his focus ahead of the 2015 campaign . Hamilton has been in-demand away from the circuit over the winter and he is also in the closing stages of finalising a big-money deal with Mercedes . The campaign gets underway on Sunday when Melbourne plays hosts to the sason-opening Australian Grand Prix . CLICK HERE for all the latest F1 news .