Furious 7 has so far brought in around $1.5 billion, thus making the franchise the top priority for Universal Pictures. Furious 8 already has a release date for April 2017 and the cast is being lined up with the script writing underway. Obviously star-producer Vin Diesel will be returning, and that's apparently causing quite a serious problem. According to the Hollywood Reporter, the studio is having difficulty finding a director for the film because Diesel is a complete pain in the ass to work with.