Fast & Furious 7 rewrites after Paul Walker’s death have been “catastrophic” according to Kurt Russell, who plays the “father figure” to Walker’s character. "They're having to rewrite, they're having to do whatever they're having to do to deal with the situation," Russell said to BBC. "It's catastrophic. It's the worst thing that could happen to a movie," the veteran actor added before qualifying, "but it's not as bad as what happened to Paul." Paul Walker died in a high-speed car accident in November.

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"So everything is in perspective. He was a terrific guy. And life is full of curveballs,” the longtime partner of Goldie Hawn told BBC. "It's just a situation that they'll work out and, at that time, I'll go back to work." Russell says he expects to begin filming again this year.

The coroner’s report was released earlier this month, and both Walker and racing partner Roger Rodas  did not live long after the high-performance 2005 Porsche Carrera GT slammed into a light post and tree and burst into flames, the report said. The car was travelling at "approximately 100+ mph."

Paul Walker Fast & Furious 7 will continue on and be released in theaters in 2015.

"At the time [of Paul's death] I had one day left [on set]," he said, "I don't know what is going to happen with that. It's obviously a difficult situation. Whether or not this guy dies off in the movie, we don't know. That may have changed now significantly too."

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Paul Walker’s brother, Cody Walker, may replace him in the remainder of Fast & Furious 7, but earlier this week, Cody announced that he will take over as head of Reach Out WorldWide, the charity that the Fast & Furious star ran with Roger Rodas before their untimely deaths in November.

"As Paul would say, 'When you put good will out there, it's amazing what can be accomplished,’” Cody wrote. “We can all make a difference in this world and I am honored to join the ROWW team in fulfilling my brother's legacy and ensure that the good my brother did lives on."