A grand road to automotive elegance will wind its way through nearby Westport this weekend.

Fairfield County Concours d'Elegance, a two-day celebration of rare and vintage motor vehicles, will take place Saturday and Sunday at the Fairfield County Hunt Club, 174 Long Lots Road.

On Saturday, the focus from 9:30 a.m. to 4 p.m. is on car and motorcycle clubs, as groups gather for exhibitions, seminars, presentations and art displays. The event is open to the public. A preview of the Sunday auction conducted by Bonhams, the international auction house, is also set.

At about 10 a.m., the Nutmeg Tour for Autism, featuring about 50 classic vehicles from the exhibition, will leave the St. Vincent's Health Services' Westport campus at 47 Long Lots Road in Westport, and travel through Fairfield and Westchester counties, returning about 4 p.m. The tour route will be posted on the website, www.fairfieldcountyconcours.com.

From 4 to 6 p.m., there will be a "Toast the Tour" reception, which benefits the Drive to Treat Autism Fund. It will feature presentation of a "Sharing the Passion" award to a collector credited with advancing the field of motoring and the art of collecting rare and significant vehicles. Advance ticket purchase is required for the reception; tickets are available at www.fairfieldcountyconcours.com. The Bonhams auction preview reception follows at 6 p.m.; Toast the Tour tickets or Bonhams tickets required.

More than 200 classic and rare automobiles and motorcycles, spanning the past 100 years, will be on display from 10 a.m. to 4 p.m. Sunday. Among the exhibits will be a full lineup of Packard Darrin cars, from every year of production, 1937-42, from the collections of Ralph Marano, Malcolm Pray and Drake Darrin, the nephew of designer Howard "Dutch" Darrin.

The event will also pay tribute to the 100th anniversary of the founding of Bugatti with a display of those vehicles, and Porsche and Aston Martin will also be featured on the field.

There also will be a range of hot rods and customs from the 1950s, motorcycles and more.

Field walks of the exhibits led by automotive experts and informational placards about each car, as well as access to the car owners who can share information about their vehicles, will be available to visitors.

Children's and educational programs will also be featured, as well as a silent auction by the Westport Rotary Club. At noon, "Reveille" will reverberate across the hunt club fields as all vehicles rev their engines. Bonhams will hold its vintage New England fall auction of memorabilia and vehicles on site as well.

For information or to buy tickets, check the website, www.fairfieldcountyconcours.com, or call 203-227-7988.