Favorite ways to travel

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Across
  1. 6. exploring
  2. 7. safety
  3. 10. compartment
  4. 11. airfield
  5. 12. shadier
  6. 13. confined
  7. 14. drawbacks
  8. 15. indefinitely
Down
  1. 1. premium
  2. 2. elegant
  3. 3. choice
  4. 4. advantages
  5. 5. opulence
  6. 8. journey
  7. 9. dreadful