The Adria was an American assembled car that was promoted though not actually mass-produced. The address of the makers was given as Batavia, New York. About 20 to 40 prototype

Prototype

A prototype is an early sample or model built to test a concept or process or to act as a thing to be replicated or learned from.The word prototype derives from the Greek πρωτότυπον , "primitive form", neutral of πρωτότυπος , "original, primitive", from πρῶτος , "first" and τύπος ,...

s were built from 1921 to 1922, but that was as far as the project went. The five-seat touring car was advertised at USD1495.

It was to have a four-cylinder

Straight-4

The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....

 2932 cc engine made by Supreme and a 3-part frame chassis

Chassis

A chassis consists of an internal framework that supports a man-made object. It is analogous to an animal's skeleton. An example of a chassis is the underpart of a motor vehicle, consisting of the frame with the wheels and machinery.- Vehicles :In the case of vehicles, the term chassis means the...

, which resulted in a patent dispute with Parenti Motors.