(TXT) airplanes.txt
 (TXT) bicycles.txt
 (TXT) boats.txt
 (TXT) busses.txt
 (TXT) cars.txt
 (TXT) choppers.txt
 (TXT) motorcycles.txt
 (TXT) navy.txt
 (TXT) other.txt
 (TXT) trains.txt
 (TXT) trucks.txt