OnBoard with Casey Stoner at Brno practice

Special OnBoard footage of Casey Stoner on the throttle at Brno during free practice for the Cardion ab Grand Prix Ceske republiky, with graphics illustrating how the Ducati Marlboro rider pushes to the limit at the Czech circuit.

Stoner is aiming for a sixth consecutive pole position this afternoon, and the chance to repeat his Brno pole-win combination from 2007.