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However , it was too heavy for much of the tracks , so Cincinnati Car Company , J. G. Brill and others pioneered lightweight constructions , use of aluminium alloys , and low-level bogies which could operate smoothly at extremely high speeds on rough interurban tracks .
 Cincinnati Car Company, J. G. Brill
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Cincinnati Car Company, J. G. Brill