Oscar Mayer's nephew Karl G. Mayer was the one to come up with the concept of getting in the giant wiener and driving it around. It was 13 feet and $5,000 of faux-beef, and it quickly found its way onto America's streets and into Americans' hearts. Drivers of Wienermobiles, who are known as hotdoggers, hand out toy whistles shaped as mini replicas of the Wienermobile, affectionately called Wienerwhistles.