Fresh water and soft foam flies through Cactus Car Wash’s 145-foot tunnel, which gently frees exteriors from dirt and grime using a combination of spinning brushes and touchless technology to avoid scratching paint. Designed to dole out a range of washes, the high-tech channel swiftly and effectively cleans cars from roof to underbelly, shining tires and sealing in newfound sparkle with a triple-foam wax. Drivers remain behind the wheel as cars move to the end of the line, where free self-serve vacuums await to suck up dirt and debris from seats and trunks. For interior jobs, a cleaning crew enlists old-fashioned elbow grease to shampoo floor mats and wipe down dashboards, and gladly chases away lumberjacks looking to steal pine-tree air-fresheners.