Cars trucks and trains

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Across
  1. 2. old and made off spare parts
  2. 5. goes behind a truck to Cary large objects
  3. 7. run on a single rail
Down
  1. 1. used to take several people around the city
  2. 3. goes fast to get in front of other cars
  3. 4. Something that spins on the side of a car
  4. 6. something used to move cars