(This is the second in a series of articles spotlighting Iowa's major contribution in the area of production of on-site veterinary equipment). The mainstay of commercially available mobile veterinary vehicles is doubtlessly the pickup truck-based veterinary "box". Two companies dominate the design, production and marketing of these units and they are both proudly based in Iowa. These two manufacturers will be separately highlighted in this and the upcoming issue of The Iowa State Veterinarian.