gasoline or diesel engines. The 260 and 334 were equipped with an all-steel cab, trimmed with plywood sourced from Peterman-owned lumber mills. In a tradition that would last for the next 40 years, the company would designate single rear-axle trucks with model numbers starting with 2; tandem rear-axle trucks started with 3. Through the end of the year, Peterbilt produced 16 vehicles; the first Peterbilt was a fire truck chassis built for Centerville (now Fremont), California. For 1940, production increased to 83 vehicles. To supplement its revenue, Peterbilt continued its practice of servicing and refurbishing trucks from all manufacturers. For 1941, Peterbilt created the heavier-duty Model 364; initially developed for the logging industry, the 364 was re-purposed for military production for World War II. In 1942, the company developed its first cab-over-engine (COE) truck, which was derived from the 260. The vehicle was a half-cab design with a full-deck chassis. In 1944, production was increased as Peterbilt secured a contract to supply 224 military trucks. In November 1944, T.A. Peterman died from cancer at the age of 51, leaving the company to his wife, Ida. In 1945, the company resumed production of civilian vehicles; to increase payloads, Peterbilt introduced aluminum-built cabs (reducing the weight of the truck). During 1947, Ida Peterman sold Peterbilt Motors Company to a group of company managers and investors for $450,000; while the investors received the company assets, Peterman retained ownership of the company real estate. In 1949, the company released a second generation of trucks, replacing the 260/334 with the all-new Model 280/350. The "Iron Nose" conventional was distinguished by its tall, narrow grille (with vertical grille shutters) and cycle-style fenders (a design that remains in use today on some Peterbilt conventionals). The first mass-produced COE by Peterbilt, the "Bubble Nose" 280/350 COE relocated the cab of the conventional above the front axle (but still received a short hood). 1950s During the early 1950s, Peterbilt developed the "dromedary" cargo system; a longer-wheelbase truck (typically a COE) was configured to transport a auxiliary cargo system placed between the cab and trailer. In 1953, Peterbilt introduced its current brand emblem, switching from a rectangular border to the current red oval. In 1954, the 280/350 underwent a redesign, becoming the Model 281/351 "Narrow-nose" conventional; the grille was redesigned, converting to horizontal grille shutters. A 281/351 COE was introduced, introducing a larger, wider cab design (sharing only the doors