Why did muscle cars die out?

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Tags

1. #power
2. #brought
3. #coffin
4. #federal
5. #lower
6. #start
7. #compression
8. #signaled
9. #crisis
10. #engines
11. #meant
12. #first
13. #regulations
14. #muscle
15. #required
16. #unleaded
17. #nails