This type of body, where the top could be rolled down, was called a Cabriolet Limousine, which originated in Germany and was very popular in the 1930s. The AMilcar Compound was the first production car in cast aluminum. The cast aluminum body, front wheel drive, rack-and-pinion steering, torque bars for rear suspension, and all-independent suspension made it a very nice car in 1937.
This car was designed by Jean Albert Grégoire. The aluminum frame is in perfect condition and does not show any corrosion, even after 60 years.