I did a double take at that as price per gallon seems markedly lower than when I was last in the US.
UK prices ratchet seemingly inexorably upwards. When US prices peaked in 08 at $4.50 we paid pretty much exactly what we pay now - £5 approx. Tax is around 65% of pump price, though it's been higher in the past.
I assume there's no US attempts to increase taxation to combat clmate change and encourage alternative behaviour.