Pulling onto Tucson’s Broadway Boulevard, both Hadyn and TomTom are barking at me for directions.  By now, the paper map is layered in greasy finger prints and questionable stains; I’ve finally managed to contain our collection of brochures and postcards inside the glove compartment; food supplies are running low (one can of hot sauce and a bruised box of rice); and the car requires an intense vacuum.

Our road trip is over.

It’s retiring in the same place as most elderly Americans.  “#1 Sunniest Retirement Spot in America!” boast billboards for “Adults-Only” RV parks.  We will establish ourselves in Catalina State Park, on the outskirts of Spanish-sounding suburbs: Oro Valley, Marana, Casas Adobes.  Maybe tomorrow, or the next day, we will drive down to Nogales.  Forgetting my passport at home, the Mexican border taunts me unfairly.

But that, I suppose, will be another destination for another road trip.

Final  stop on our Southwest American road trip: Tucson and Nogales, Arizona

Previous stops: Tucson and Nogales, Arizona

• The Mojave Desert and Joshua Tree National Park, California
• Las Vegas, Nevada and the Hoover Dam
• Zion National Park, Utah
• Lake Powell, Arizona, the Navajo Reservation and Bryce Canyon National Park, Utah
• South Rim of the Grand Canyon
• Route 66, Holbrook and the Painted Desert, Arizona
• Sedona, Arizona