The temperature drops fast in the high desert. You feel it first on the tips of your ears, then in the small of your back. Inside the van, a single warm LED glows above the tiny kitchen. You wrap both hands around a ceramic mug that cost three dollars at a roadside pottery stand three states ago. The tea is nothing special. But in this moment, it might be the best thing you've ever tasted. Comfort isn't about luxury. It's about one degree of warmth when you need it most.