Is it better for the environment to fly or drive?

Related questions

1. How much would my road trip cost?
2. What are Avis premium cars?
3. What are Avis car rental requirements?
4. Can I rent a car to drive across America?
5. Is it cheaper to fly or drive?
6. How much gas will I need to drive 1000 miles?
7. Is a plane really safer than a car?
8. Does Avis have after hours drop off?
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10. Does Avis charge for extra driver?

Tags

1. #requires
2. #carbon
3. #footprint
4. #efficient
5. #becomes
6. #flight
7. #better
8. #other
9. #certainly
10. #cruising
11. #cross
12. #country
13. #effective
14. #reduce
15. #stages
16. #first
17. #often
18. #flying
19. #drive
20. #because
21. #longer
22. #distance