1927 Marmon E-75 Model Limousine

'The Model 32 of 1909 spawned the Wasp, winner of the first Indianapolis 500 motor race. This car featured the world's first rear-view mirror.
The 1913 Model 48 was a left-hand steering tourer with a cast aluminum body and electric headlights and horn, as well as electric courtesy lights for the dash and doors. It used a 573 in3 (9382 cc) (4½×6-inch, 114×152 mm) T-head straight-6 engine of between 48 and 80 hp (36 and 60 kW) with dual-plug ignition[3] and electric starter. It had a 145 in (3683 mm) wheelbase (long for the era) and 36×4½-inch (91×11.4 cm) front/37×5-inch (94×12.7 cm) rear wheels (which would interchange front and rear)[4] and full-elliptic front and ¾-elliptic springs. Like most cars of the era, it came complete with a tool kit; in Marmon's case, it offered jack, power tire pump, chassis oiler, tire patch kit, and trouble light. The 48 came in a variety of models: two-, four-, five-, or seven-passenger tourers at US$5000, seven-passenger limousine at US$6250, seven-passenger landaulette at US$6350, and seven-passenger Berlin limousine at US$6450. (By contrast, a Colt Runabout was US$1500, an Enger 40 US$2000, and American's base model was US$4250.
The 1916 Model 34 used an aluminum straight-6, and used aluminum in the body and chassis to reduce overall weight to just 3295 lb (1495 kg). A Model 34 was driven coast to coast as a publicity stunt, beating Erwin "Cannonball" Baker's record to much fanfare.
New models were introduced for 1924, replacing the long-lived Model 34, but the company was facing financial trouble, and in 1926 was reorganized as the Marmon Motor Car Co.

In 1929, Marmon introduced an under-$1,000 straight-8 car, the Roosevelt, but the stock market crash of 1929 made the company's problems worse. Howard Marmon had begun working on the world's first V16 engine in 1927, but was unable to complete the production Sixteen until 1931. By that time, Cadillac had already introduced their V-16, designed by ex-Marmon engineer Owen Nacker. Peerless, too, was developing a V16 with help from an ex-Marmon engineer, James Bohannon.

The Marmon Sixteen was produced for just three years, with 400 examples made. The engine displaced 491 in³ (8.0 L) and produced 200 hp (149 kW). It was an all-aluminum design with steel cylinder liners and a 45° bank angle.

Marmon discontinued automobile production in 1933, the worst year of the Great Depression.
Marmon was notable as having introduced the rear-view mirror as well as pioneering both the V16 engine and the use of aluminum in auto manufacturing.'