Simplify the following text for a Grade 7 native English-speaking person.
Original: The Dunlop MSA British Touring Car Championship withdrew the track from its calendar in 2007 , however demand from teams and sponsors saw the return of Silverstone to the 2008 BTCC calendar .
Simplified: The Dunlop MSA British Touring Car Championship withdrew the track from its calendar in 2007 . Strong demand brought the series back to Silverstone for the 2008 BTCC calendar .