Shell Oil Company Demos Cars with 376MPG or 0.75L/100Km

Using fully stock production gasoline engine powered vehicles, with engine modifications limited only to changes in fuel mixture and ignition timing, Shell Oil Company served host to an open competition in automobile efficiency. The fruit of their forum was sweet indeed as a two-door, full-sized production car was able to drive off with the prize by achieving 376.59 miles in normal driving conditions using a single gallon of fuel. A more heavily modified vehicle was able to achieve over 1140 miles on a single gallon of fuel. Results like these are truly astounding and beg the question: Are we really getting all we can in efficiency from auto makers?