Vehicles

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Across
  1. 4. Large sphere that floats high up in the air
  2. 7. Has two wings and carries a lot of people
  3. 8. Goes underwater
Down
  1. 1. Flying vehicle with blades
  2. 2. Transports a lot of people above ground
  3. 3. Has two wheels and goes very fast
  4. 5. Has four wheels
  5. 6. Transports a lot of people below the ground