In small-town America, the bikers enjoy some retro roadside spectacles that provide entertainment and intrigue, including the huge fibreglass figures known as "muffler men". Dave and Si then enjoy a championship-winning apple pie and learn how Route 66 entered American folklore by connecting small-town America from east to west and enabling it to prosper.
Dave and Si are on the trail of Oklahoma's famous beef. In Oklahoma City a classic T Bone steak is followed by a visit to the city's Vietnamese community, to knock up Vietnam's beefy national dish: Pho.
Dave and Si ride from Texas into New Mexico, exploring the small independently owned restaurants and food producers and cooking carnitas with mac and cheese and a grown-up chilli chocolate pie.
The bikers cross the state of Arizona in search of the Wild West. They are invited to a traditional Navajo barbecue where a sheep is butchered, grilled and eaten alongside some traditional fry bread.
On the last leg of their Route 66 odyssey, the bikers make a small detour to the city of light, Las Vegas, to learn how to make the best-mashed potato in the world.
