Based on those numbers, a US gallon would cost $7.38 (3.785 x 1.5 x 1.3). In the Detroit market this weekend, a gallon of 87 octane petro (on average) is $3.20. ...just for those across the pond who aren't aware of how fortunate we are in the US with regards to energy expenses.
Welcome aboard! I moved over to the US from the UK, so I know how much cheaper gas is over here, Almost had a heart attack when I went back home this summer and saw how much it cost to fill a tank We sure do have it better here.