Vin Diesel's Fast & Furious 7 problem: too slow, too infuriating

It's slow going on Universal's Fast & Furious 7, and sources say it's not just because of the technical demands of re-creating late star Paul Walker. According to sources, star Vin Diesel has been so difficult that some on set have fantasized about using the facial-replacement technology being deployed to put Walker in the film as a sub for Diesel as well.

"Vin spent a whole day in his trailer one day," says one insider. "The next day, they waited four hours for him. He called a meeting [May 28] of studio execs to his trailer for two-and-a-half hours to say, 'What the f— am I doing here?' " The next day, work was done with doubles. Another source confirms that progress has been frustrating, with the crew suffering from "low morale."

Universal Pictures chairman Donna Langley flatly denies trouble: "This production is working through some challenges that are historically unprecedented. The crew and cast, led by Vin, have been nothing but terrific under these circumstances."