Start your engines; it’s time to take a ride withThe Bikeriders.

Lyons spent years embedded with a Chicago motorcycle club, taking photos and interviewing real members and their families.

Nichols became fascinated with the subject matter when he first read the book some 20 years ago.

Jodie Comer as Kathy and Austin Butler as Benny in director Jeff Nichols' THE BIKERIDERS

Jodie Comer and Austin Butler in ‘The Bikeriders’.Kyle Kaplan/Focus Features

But the movie version isn’t a direct retelling of Lyon’s book.

They’re always affectations because movies are fake, but I’m doing my best.'

That is not whatThe Bikeridersis.The Bikeridersis fiction."

Boyd Holdbrook as Cal, Austin Butler as Benny and Tom Hardy as Johnny in director Jeff Nichols' THE BIKERIDER

Tom Hardy as Johnny in ‘The Bikeriders’.Mike Faist/Focus Features

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ChallengersstarMike Faistplays Lyon, who spent four years as a legitimate member of the club.

“In the film, Jeff cleaned me up,” Lyon said in that same interview.

Michael Shannon stars as Zipco in director Jeff Nichols' THE BIKERIDERS

Michael Shannon as Zipco in ‘The Bikeriders’.Focus Features

And I was about ready to just run.

So I says to my girlfriend, well, I gotta go.

And she says, ‘Oh, theyre not that bad.

Norman Reedus as Funny Sonny in director Jeff Nichols’ THE BIKERIDERS,

Norman Reedus as Funny Sonny in ‘The Bikeriders’.Kyle Kaplan/Focus Features

Just sit here.'

So all of a sudden I seen Benny and he was standin at the end of the bar.

And I says to my girlfriend, boy, whos the good-lookin blond guy?

I says, he dont look like the rest of these guys.

She says, oh Kathy, you dont want to go out with him."

Nichols calls not including the children “one of my biggest regrets of the film.”

And when I first started showing people the film, it was really distracting.

I hadn’t involved that family enough to make it integral to the film.

It was really distracting and it made people really not like her.

But more than that, it was just kind of confusing.

They were like,wait a second, where are [the kids]?…

“Most of the bike riders I knew are dead,” Lyon toldA Rabbit’s Foot.

“We did Google searches,” he says.

“We tried to find people, but we just didn’t have a lot of information.

I mean, it’s nearly 60 years ago, and a lot of these people had died.

A lot of these people didn’t have names that we knew.

How do you find Zipco?”

But that’s starting to change now that the movie is coming out.

We gave that to Danny Lyon and he’s gone to interview him.

I would have to say, no.

I made everything else up."

The Bikeridersis playing now in theaters.