ADVISORY-Motor racing-Witness story on Race of Champions

Nick Mulvenney has been Reuters sports correspondent in China since early 2006 and has been involved in covering Formula One motor racing for a decade. In the following story, slugged MOTOR RACING-BUTTON/ (WITNESS) and headlined 'WITNESS-Motor racing-Burning up the Bird's Nest with Button', he tells how he rode alongside Formula One champion Jenson Button in a heat of the annual Race of Champions in Beijing this week.