Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced by skeletal muscles.[1] EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram.
The general consensus is that a classic motorcycle must be at least 25 years old. Another consideration of what constitutes a classic motorcycle is the simplicity of the bike itself. To be considered a classic, a motorcycle should maintain simple aesthetics hearkening back to the origins of these vehicles.
Classic cars are defined by the Classic Car Club of America (CCCA) and there's a list of those cars that are considered classics. Most cars that are defined as classics are 1948 and earlier. The '55, '56 and '57 Chevrolets get the word classic assigned to them by some groups, and so do the early Mustangs, says Greer.