Last July, I drove from Seattle to Monterey for TMC Connect, with a stop in Loomis for Bonnie's BBQ. I used all of the HPCs listed along that route:
Burgerville, Centralia, WA
World Trade Center, Portland, OR
Sequential Biofuels, Eugene, OR
Seven Feathers, Canyonville, OR
Comfort Inn, Yreka, CA
Berry Patch, Orland, CA
Woodland Mall, Woodland, CA
Tesla Factory, Fremont, CA
They all worked, all were 70A on 208V circuits (so about 50 ideal miles per hour of charging). The power light on the unit in Yreka was burned out, but the unit worked just fine.
Tesla has removed the Roadster HPCs from the Santana Row and Menlo Park stores. Those pins should be removed.