just think..
if you lived in england, the cost is PER LITRE
ex:
40 gals = 151.37 litre
cost of litre/gas in london (essex): 112.7p (pence=us pennies)
151.37 L x 112.7 P = 17089.673 P
17089.673 / 100=
$170.89
x4 (1x per week for a month)= $683.58
x52 (1x per week for year)= $8886.63
feel better?