Some of the action sequences are insane. No, really. Absurd, impossible, physics defying, triage-required stuff. No matter. That's the foolish rush of a franchise that must go faster and faster and furiouser and furiouser.
Diesel's mega-bass voice and the slo-mo charisma with which he delivers those bass lines have resulted in a series that got more popular in its fifth and sixth installments.
Nobody goes to these movies for dialogue. And maybe that's true - but that doesn't mean they have to be written like a bunch of third graders playing "movie" in the school yard.
Just as the plot threatens to run out of gas, Lin rescues the film with a spate of vastly ridiculous and therefore enjoyable set-pieces, most of which involve means of conveyance designed to make the cars look puny.