Simplify the following text for a Grade 6 native English-speaking person.
Original: In 2005 , Piquet took part in the A1 Grand Prix for A1 Team Brazil , winning both the Sprint and Main races at the first event of the season at Brands Hatch , as well as scoring a point for the fastest lap .
Simplified: In 2005 , Piquet took part in the A1 Grand Prix for A1 Team Brazil .