Clad in appropriate leather gear and helmets, host David Yetman and ecologist Yar Petryszyn cruise through the second half of the deserts along Route 66, this time on Harley Davidson motorcycles. This phase of the journey begins in the Petrified Forest near the border of Arizona and New Mexico and traces the "mother road" through the pines of Flagstaff to the Joshua trees of the Mojave Desert. The travelers stop in Winslow, Arizona at the La Posada Inn which has been open since the 1930s. Along the way, they experience the heavy winds (50-60 mph) at the Meteor Crater, visit the ghost town of Oatman, Arizona, catch a glimpse of the rare and elusive "shoe tree" and finish up in the San Bernardino Mountains of California.