British rider Chris Harris will be looking to repeat his 2007 winning Cardiff performance as the best riders in the world go full throttle in front of thousands of fans.
In an event which will be full of drama and guaranteed thrills, the riders will reach speeds of up to 70mph - competing on 500cc bikes, with no brakes and acceleration that's faster than an F1 car!
The fun will start in the Fanzone on St Mary Street and the Grand Prix will start with pre-event entertainment in the Millennium Stadium, followed by the Grand Prix and finishing with a fantastic firework display.
We've teamed up with the 2012 FIM British Speedway Grand Prix organisers to give Cardiff Blues supporters the chance to enjoy this afternoon of nonstop sporting action and all you have to do to put yourself in pole position is answer this simple question:
What is the name of the current World Champion?
Send your answer, along with your name, address and a daytime telephone number to ' 2012 FIM British Speedway Grand Prix competition, Cardiff Blues, Cardiff Arms Park, Westgate Street, Cardiff CF10 1JA. The deadline for entries is Monday 6 August. Terms and conditions apply.
If you're not lucky enough to win, tickets can be purchased online via speedwaygp.com, ticketmaster.co.uk or by calling 0844 248 5029