The European Commission is to open a new investigation into the 2014 sale of Germany’s Nürburgring racetrack for possible breaches of EU state aid rules, the commission announced on Thursday. Following the insolvency of the public owners, the racetrack was sold to Capricorn, a private company, in 2014 for around €77 million ($84.9 million). The German state of Rhineland-Palatinate had however invested almost half a billion euros in the racetrack’s expansion, including a new leisure park. The investigation is to clarify whether the once state-owned facility was wrongly sold at a lower price tha…