I took a deep breath and crossed the slush-covered sidewalk, feeling a strange combination of dread and excitement. As I approached the RV, a door near the center of the right side slid open and a short stepladder extended to the pavement. I climbed inside and the door slid shut behind me. I found myself in the RV’s tiny kitchen. It was dark except for the running lights set into the carpeted floor. To my left, I saw a small bedroom area at the back, wedged into a loft above the RV’s battery compartment. I turned and walked slowly across the darkened kitchen, then pulled back the beaded curtain covering the doorway to the cab.