What is the most expensive car ever auctioned?

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Tags

1. #changed
2. #number
3. #million
4. #grail
5. #auctioned
6. #ferrari
7. #auction
8. #legal
9. #racing
10. #august
11. #between
12. #model
13. #france
14. #built
15. #world
16. #hands
17. #record
18. #known