Rural delivery in my area is done in Jeep Wranglers. They have two, a red one and a blue one. They also have two USPS vans for the areas closer to the PO where the roads stand a better chance of being plowed. Four small towns, one zip code, one post office. Since my roadside box kept getting wiped out by plows, I no longer have one and have been getting my mail at a PO box for about 20 years. But I see the blue Jeep in my area regularly. I met the woman who drives the red one a few years ago after finding her wallet in the PO parking lot and returning it.