Complex sentence: In December of 2007, Verstappen announced that he would take part in the 2008 24 Hours of Le Mans-race, as well as enter the 1,000 kilometer races in the Le Mans Series.
Split into simpler sentences: In December of 2007, Verstappen announced that he would take part in the 2008 24 Hours of Le Mans. The team will also enter the 1,000 kilometer races in the Le Mans Series.