The best tanks has a good premise, but I don't agree with the idea, because it will produce inflated numbers. Many people here pump until the 'first click', to try to maintain a consistent fill-up. However, if you pump at different stations, then the first click level could be different. So, even with the same driving habits, you could fill up 9 gallons one week from station A, and 10 gallons the next week from station B.
If you were to alternate stations every time you fill up, then your average would be about 9.5 gallons, but if you were only to take the best tanks recorded, then it would show up as 9 gallons.
Also, if somebody wanted to (not sure why they would, but who knows), then they could fake the system intentionally, not just by going to different pumps. Rather than fill to the first click, they could just do a short-fill, and then the next time they fill up, they would just fill it all the way. This would produce the same inflated numbers, and really not give an accurate idea of their mileage.
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