Newest member of the “Jeep” family is the “Beep,” a fast little three-wheeled motor scooter that's joined the army as a courier. The jeep and peep, tough little command cars and infantry carriers that will go wherever they’re sent, have already attained fame as the rough riders of '42. The beep is an economical carrier with plenty of storage space in front for packages. It has a top speed of 25 miles an hour, and requires little rubber.