By Joe Yogerst, CNN
(CNN) — Route 66 is just one of the highways that features in “On The Road,” the Jack Kerouac book that introduced so many people to white-line wanderlust.
More than anything written about the iconic highway, it’s a quote from that book that personifies the almost mystical allure of America’s most famous road: “Nothing behind me, everything ahead of me.”
That’s exactly what Route 66 has meant to millions of travelers who have cruised all or part of the highway since its birth 100 years ago — freedom to make a fresh start, reinvent yourself, and leave your troubles in the rearview mirror.
“Route 66 came along when the idea of a road trip was just getting started,” says Sean FitzGibbons, executive director of the History Museum on the Square in Springfield, Missouri. “It encapsulated so much of 20th-century Americana and over time it just kind of gained this mythical resonance within the zeitgeist of the world.”
The highway’s roots stretch back to the early 1920s and it’s an early example of government-private sector cooperation.
When the federal government decided to number the main cross-country highways — an attempt to make it easier for motorists to navigate what was then a willy-nilly naming system — they created a route from Chicago to Los Angeles that became U.S. Highway No. 66.
Hoping to stimulate tourism along the new route, a pair of enterprising businessmen in Tulsa, Oklahoma, and Springfield, Missouri, created maps, brochures, billboards and advertising campaigns to promote the road. Their goal was boosting tourism in their own cities, but they inadvertently made driving the entire route a bucket-list adventure.
Their efforts coincided with the advent of motoring vacations in the United States and iconic roadside services like diners, motor lodges, service stations and curio shops.
Route 66 took on a whole different meaning during the Dust Bowl environmental disaster of the 1930s, when tens of thousands of disenfranchised farmers and their families used the road as their pathway to the promised land of California.
The highway was soon immortalized in the novel “The Grapes of Wrath” by John Steinbeck, who called Route 66 the “Mother Road,” and in the Woody Guthrie song “Talking Dust Bowl Blues.”
The biggest boost to its legendary status came in 1946 when Bobby Troup recorded “(Get Your Kicks On) Route 66,” a song that epitomized the spirit to break free and live a little after so many years of the Great Depression and World War II.
All these years later, the Mother Road continues to symbolize the wind-in-your-hair freedom of a cross-country road trip. Here are six essential stops on Route 66:
St. Louis, Missouri
Route 66 starts its westward run at the intersection of Adams Street and Michigan Avenue among the skyscrapers of downtown Chicago. Several signs mark the spot, but it’s a rather modest debut for such a famous road, which cuts across the Windy City’s sprawling suburbs onto the rolling prairie of central Illinois.
Most of the original roadway was replaced by Interstate 55. But many of the communities along the way offer reminders that the Mother Road once passed through their town. Like the Blues Brothers dancing beside the “Kicks on 66” sign atop the Rich & Creamy ice cream stand in Joliet, the Gemini Giant Muffler Man in Cicero, and the Route 66 Hall of Fame & Museum in