Plastic automotive engine
Version one was based on Ford's 2.3-liter Pinto engine and weighed (vs. for its cast iron counterpart). It was designed to produce at 9200 rpm. It was composed of metal cylinder sleeves, metal combustion chamber tops, metal piston crowns, bearings, valves and seats, and a stock 2.3L Pinto crankshaft. Nearly everything else in the engine, including the block, rods and piston skirts, were made of glass reinforced Polyamide-imide thermoplastic resins manufactured at the time by Amoco Chemicals Co. The engine was never installed in a vehicle.
Ford Pinto
NHTSA scheduled a public hearing for June 1978, and NHTSA negotiated with Ford on the recall. 
Lee and Ermann noted that NHTSA used a worst case test to justify the recall of the Pinto, rather than the regular 1977 rear impact crash test. A large "bullet car" was used instead of a standard moving barrier. Weights were placed in the nose of the car to help it slide under the Pinto and maximize gas tank contact. The vehicle headlights were turned on to provide a possible ignition source. The fuel tank was completely filled with gasoline rather than partially filled with non-flammable Stoddard fluid as was the normal test procedure. In a later interview the NHTSA engineer was asked why the NHTSA forced a Pinto recall for failing a 35 mph test given that most small cars of the time would not have passed. "Just because your friends get away with shoplifting, doesn't mean you should get away with it too."