Start the ultimate American road trip with a cruise in a psychedelic art-car in San Francisco, California then journey to Millsboro, Delaware and blast pumpkins into the sky at the Punkin Chunkin' Festival.

Americans' competitive spirit reveals itself in some wacky ways, like the coffin race in Nederland, Colorado, which is dedicated to a dead guy and brings new meaning to the term "frozen stiff." Or the National Snow Sculpting Competition in Lake Geneva, Wisconsin, where snowmen go high-end while temperatures hit record lows. Then there's the Kinetic Sculpture Race in Baltimore, Maryland, where crazy contraptions speed across a gritty land and sea racecourse. And don't forget Spamarama, a festival in Austin, Texas, which centers on, what else-SPAM!

Only in America could you kick off your shoes and perfect your form in the Mud Pit Belly Flop Competition at the Summer Redneck Games in Dublin, Georgia. Or join the aliens of Roswell, New Mexico, for the annual Roswell UFO Festival, which celebrates the unknown with performances and costume contests. To the east, Black Rock, Nevada, hosts an amateur rocketry competition that threatens to blast out of this world. But if you can't build a rocket in your home, a cardboard boat will do just fine for the Cardboard Boat Race in Heber Springs, Arkansas.

Take a trip from the extreme north to the Deep South as we search for America's wackiest celebrations.

Welcome to Sturgis, where all aspects of motorcycle culture are celebrated, from custom bikes and body art, to classic rides and rock and roll.

Americans' imaginations run wild in the nation's oddest celebrations!