It's a unique club, made for those whose heartbeat quickens with the rev of an engine, those who have just a splash of motor oil in their veins. Some like to tinker, others are sentimental about the cars they cruised in as kids.

The classic car culture has always thrived in Petaluma. It's part of the reason George Lucas brought his 1973 coming-of-age tale “American Graffiti” to film in the city. It is a lifestyle that is celebrated annually with Cruising the Boulevard's Salute to American Graffiti, which will culminate on Saturday when Petaluma Boulevard will shut down to showcase 425 classic automobiles, including a 1956 T-Bird and a 1967 Citroën that were both featured in the original film.

“It's the Citroën that Richard Dreyfus actually drove in the movie,” says John Furrer, a founding board member of the all-volunteer charitable event.

Furrer has always been a motor head. He likes that he can work on the cars himself, “no computers or smog checks needed.” But there's also something sentimental about his fascination with the classics, which can be seen in his 1931 Ford Model A. “I bought that with my first income tax return check,” he beams.

Making a living traveling the world, playing in front of hundreds of thousands of people in one of the biggest rock ’n’ roll bands on the planet sounds like a dream job to every teenager who’s ever picked up a guitar; hell, I still dream about living that lifestyle! But Mike Dirnt, bass player of the seminal punk band Green Day, has actually gone from dreaming about it to making it his lifelong career. Together with his band mates, Billy Joe Armstrong and Tre Cool, they’ve forged a steady path of rock destruction since forming some twenty-five years ago in Northern California’s East Bay. And while many things have changed over the years as the band went from playing three dollar shows at Gilman Street to sell-out stadium shows around the world, one thing has remained; Mike’s ’56 Ford Panel truck.