Simplify the following text for a Grade 7 native English-speaking person.
Original: Brawn had won the drivers ' and constructors ' championships in the 2009 season , their only season as a team following their buy-out of the Honda Racing F1 team .
Simplified: The Brawn team was created when they purchased the Honda Racing F1 team . Brawn had won the drivers ' and constructors ' championships in the season , their first and only season as a team .