It has been revealed that the reason why Caleb and Cody Walker decided to join the filming of Fast and Furious 7 is the pep talk given by their father, Paul Sr. Walker.

Producers, cast members, and fans were elated when Caleb and Cody Walker, younger brothers of the late Paul Walker, decided to join Fast and Furious 7 so the movie can finish production. The cast and crew experienced a huge hit when lead actor, Paul Walker, was killed in a fatal car crash in November last year.

When the actor's younger brothers, Caleb and Cody, came to the rescue to fill in their brother's shoes in the movie, production began speeding up. Just recently, the brothers were photographed filming some scenes in Malibu with the rest of the cast. The movie is now set to be released on April 10, 2015.

Paul Walker's father spoke to New York Daily News and shared that he had a pep talk with his sons to convince them to complete the movie.

"I had a hand in convincing Caleb and Cody. We had a pep talk because it was something they were obviously very skeptical of doing and I think it helped," said Paul Sr. during the interview that was held in his Los Angeles residence.

The father added that the brothers weren't sure if joining the filming would be a good idea, but he insisted that it will be a good way of immortalizing his late son's legacy.

"They were obviously wary of filling Paul's shoes; it was an unenviable task and they didn't want to feel like they were intruding. But the incredible love they received from Tyrese, Ludacris and Vin Diesel was an unbelievable help. Once they started working on the movie, it was about everybody pulling together to fill the void left behind by Paul," added the mourning father in the same NY Daily News post.