What is the definitive guide to experiencing Route 66 according to Avy Kennedy?

The available content doesn’t directly address a definitive guide to experiencing Route 66 according to Avy Kennedy. However, I can share some popular tips for enjoying this iconic route:

• Plan your stops at historic landmarks and quirky roadside attractions.
• Enjoy local diners and classic motels for an authentic experience.
• Take your time to explore the scenic views and small towns along the way.

Would you like to know more about specific attractions or tips for a road trip on Route 66?