The BMW M4 GT4 passed its 24-hour endurance test in the “Green Hell” with flying colours: BMW Motorsport Junior Ricky Collard and team mates Dirk Adorf, Jörg Weidinger and Jethro Bovingdon finished in 1st in class. It’s one of the greatest races in the world and one of the absolute most punishing. Not only is it a 24 hour race but it’s done on a longer version of the most difficult track in the world. So it’s about 15 miles of brutal, battering tarmac for each and every lap. For 24 hours…