TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Engine: The engine further comprises an eccentric (3032) displacement adjustment ring adjustably disposed within the housing, where an angular displacement of the eccentric displacement adjustment ring is adjustable to selectively adjust the distance between the rotational center of the crank ring relative to the rotational center of the cylinder rotor. The engine comprises several of cylinders disposed within the cylinder rotor, the cylinders radially oriented relative to the rotational center; and comprises several pistons disposed within the cylinders, each of the pistons reciprocal within one of the cylinders along a predetermined stroke length to compress a gas as the piston moves toward the rotational center, where the predetermined stroke length of each of the pistons is adjustable to adjust a displacement of the engine. Preferred Components: The crank ring rotatably disposed within the housing about a rotational center. The cylinder rotor rotates about a rotational center spaced from the rotational center of the crank ring such that rotation of the crank ring and the cylinder rotor causes reciprocal motion of the piston within the cylinder. The crank ring is adjustably mounted within the housing to permit the moving of the rotational center of the crank ring relative to the rotational center of the cylinder rotor to selectively adjust a displacement of the engine. The crank ring is adjustable during operation of the engine such that the displacement of the engine can be adjusted without stopping of the engine. The housing having a center. Each of the pistons are coupled to a crank disposed within the housing, where the predetermined stroke length of each piston is adjusted by rotating the crank. The compressor is adapted to compress a fluid for use in driving the drive wheel to aid in propelling the vehicle forward.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: Processing (M1) waste products from biological sources into fuel involves: carrying out steps (a)-(c), (d1) separation of fats and oils from the waste products into a first waste stream; (d2) separation of proteins from the waste products into a second waste stream; (d3) separation of cellulose from the waste products into a third waste stream; and (e1) blending a fuel with at least one of the first, second, or third waste streams to form a bio-fuel mixture. Preferred Components: The selected constituent is fats and oils; or proteins; or cellulose based products. EXAMPLE - No suitable example given.