Why is the Aston Martin Vulcan not road legal?

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Tags

1. #delivered
2. #produced
3. #intended
4. #aston
5. #customer
6. #numbers
7. #limited
8. #million
9. #extremely
10. #close
11. #built
12. #involved
13. #vulcan
14. #martin
15. #track
16. #disclose
17. #first
18. #priced
19. #legal