Destinations or trip last leg end points have been the only cases for using HPWCs during my travels.
Examples of such places include Bar Harbor,
Maine and Hilton Head Island, South Carolina.
Even these locations as well as Key West,Florida have been ameliorated somewhat by nearby SCs (e.g., Savannah, Georgia and Marathon Key.
Plenty of work yet to be done at the margins, however. For example:
Tombstone and Bisbee, Arizona, the latter of which being a mile high similar to Denver.
All southern Ports of Entry once the Mexico exclusion is lifted - which you would think would be soon as the Mexico SCs march north and west. Today, venturing into Mexico voids your warranty, and good luck finding car insurance that pays US shop rate in excess of $50/hr. This is a shame in part because SCs at PoE would open up destinations within Tourist Zones including Ensenada, Puerto Peñasco (Rocky Point), Guaymas, and so forth.
National Parks have some work yet - see the Grand Canyon for starters.
And lest we not forgot Elon’s promise to open up the Great Frontier with SCs along the Alaska Highway “in a couple of years from 2015 or 2016, yeah. Progress there has been exactly zero so far.
So yeah, while they’re infilling Nebraska and Wyoming, there’s some work yet to be done at the margins - and these are margins with a lot of traffic. The San Ysidro border crossing (south of San Diego, which opens up Baja del Norte (itself the home to hundreds of thousands of expatriated Americans) is the busiest land crossing on the planet by vehicular volume.
In the meantime, it’s nice to see forward-thinking businesses at these endpoints differentiate themselves with HPWCs, both locally and within the Nav for all to see. They do put the destination in Destination Charging.