Lando Norris begins Formula One title defense in Melbourne under new regulations

Lando Norris begins his Formula One title defense in Melbourne under new regulations, facing uncertainty with hybrid power units and revised car designs. The Australian Grand Prix introduces significant rule changes affecting engines and chassis, with drivers adapting to battery management and potentially different performance dynamics. Cadillac debuts as an 11th team. Pre-season testing suggests the traditional top teams may still lead, but Mercedes and Ferrari show promising signs, while Red Bull has developed its own power units.