Rolling Restaurants

All over the U.S. a little-known but strategic war industry is booming. It is the business of factory feeding. Two years ago this business contented itself with bourgeois monikers like "lunch wagon" or "canteen." Now the factory feeders haughtily call themselves "subsistence contractors," "industrial caterers," "rolling restaurants" and (at Cessna Aircraft) "Witamin Wagons."

The need for factory feeding is as old as U.S. industry, but now is acute. Some war plants are so huge that it would take a worker his entire lunch period just to get to a central cafeteria and...