"It's not the destination, it's the journey."
That little bit of wisdom is according to none other than Ralph Waldo Emerson. Unfortunately, Ralph never managed to drive the back roads of the southwestern US. If he had, like Horace and Irma he would have learned just how interesting a journey can be when you travel the back roads that crisscross the wide open country.
Those two love to wander and see what's out there, even if it's nothing. They've got different styles, different approaches to meandering, but share that passion.
Even if you don't know the area and there is no cell service, you can't get lost, can you? After all, if you find yourself uncertain of your whereabouts, you can just backtrack, follow the road you came in on... right?
Relying on that, you better take into account the surreal vagaries of the southwest. Reality gets nuanced around ghost towns and cattle trails. And it might be that, in their enthusiasm, Irma and Horace have forgotten that lesson.
It takes place in the blink of an eye.