You can watch triple Olympic gold medallist Chris Hoy take on Formula One world champion Lewis Hamilton this weekend live on BikeRadar.
As part of the annual Race of Champions at Wembley Stadium, Hamilton will line up in a Mercedes-Benz road car while Hoy takes to his Dolan track bike. Starting side-by-side, the two stars will race around the arena on a tight and twisty course.
And you can watch Sunday's epic clash right here, thanks to online action sports broadcaster Freecaster.tv. The race will be broadcast live, with commentary by Bruce Jones and John Hindhaugh.
Hoy said: 'It's a completely different kind of venue to anything I'm used to. I think it'll be great fun and I'm curious to see what'll happen."
Simply bookmark this page, and the Race of Champions webcast will go live automatically at 1.50pm (GMT) on Sunday.