Pictured is a 750 gallon tank and the concord had a fuel capacity of 31,500 gallons. Thats he equivalent of 42 of these tanks

Pictured is a 750 gallon tank and the concord had a fuel capacity of 31,500 gallons. Thats he equivalent of 42 of these tanks

The gains from increased density were extremely marginal, but then again F1 is a marginal gains game. Maybe you could push a couple extra % more in some parts of the race to gain or secure track position but it wouldn’t change overall performance. That’s also why the FIA switched to fuel weight instead of volume.
On a plane like this it wouldn’t make a difference as weight is more important than volume.