High Quality Content by WIKIPEDIA articles! The 2007 American Le Mans Series season was the 9th season for the IMSA American Le Mans Series. It was a series for Le Mans Prototypes (LMP) and Grand Touring (GT) race cars divided into 4 classes: LMP1, LMP2, GT1, and GT2. It began March 17, 2007, and ended October 20, 2007 after 12 races. It was the league`s longest season since 2000.