3,145 miles per US gallon

Vancouver to Halifax on a single tank of gas: A team of engineering students from The University of British Columbia has built a vehicle so efficient that it could travel from Vancouver to Halifax on a gallon of gasoline. The UBC design, which required the driver to lie down while navigating it, achieved 3,145 miles per US gallon (0.074 litres/100 km) — equivalent of Vancouver to Halifax on a gallon (3.79 litres) of gas — costing less than $5 at the pump.