Subtitle:911 RSR Successor Enters Test PhaseThe most successful GT race car of the 2015 season will be replaced by a completely new race car in 2017. The successor to the 911 RSR has already completed a successful rollout on the test track in Weissach. Now begins the test phase on...

Porsche has released pictures of the new 911 with which it is set to make a full-season factory return to GTE Pro in the 2017 World Endurance Championship.The photographs show the all-new 911 RSR undertaking a shakedown at Porsche's Weissach test track at some undisclosed point over the past month....