Jalopnik: If You Want 70 MPG, Your Next Car May Have To Look Like This
"The DeltaWing idea is based on four ideas: reduced weight, increased powertrain efficiency, decreased energy consumption, and improved aerodynamics. They say the street car will do all of these things, and their current targets are zero to 60 mph in six seconds, a 130 mph top speed, and up to 70 miles per gallon with a small four-cylinder engine with somewhere between 85 and 110 horsepower."
I think it's backwards. Should be reversed for a proper tear drop shape.