There might be acceleration trouble for Fast & Furious 8 ahead.
A sequel to Furious 7 - currently the fifth highest-grossing film ever - has been slotted in for April 14, 2017, but it looks like the project is short of a director.
According to The Hollywood Reporter, franchise veteran Justin Lin and Furious 7's James Wan have both passed on directing the sequel.
Wan has apparently opted to make The Conjuring 2: The Enfield Poltergeist, whereas Lin has his hands full with Star Trek Beyond.
While a search for a new director remains ongoing, producer Neal H Moritz was quick to deny suggestions that Vin Diesel's demanding nature caused trouble with Wan on the Furious 7 set.
"Obviously, if there was any issue, we wouldn't be making the eighth [film] with [Diesel] right now," the producer insisted.
Universal added: "The studio and filmmakers loved working with James on Furious 7, but he was never in the mix for an eighth film due to a scheduling conflict with The Conjuring 2.
"We are actively casting and searching for the right director for the next chapter of the franchise."
Vin Diesel previously hinted that the eighth instalment of the Fast & Furious series will likely take place in New York - after spanning the globe for the last movie.
Furious 7 baddie Jason Statham also expects to return as Deckard Shaw, saying in June: "They really do relate to the characters. They love these characters. They've followed them for years and years.
"We're already talking about doing another one, part eight, and I'm a newcomer. I just got invited to the party in this last one, so it's nice to know that I'll be doing another."