By the way, I don't think this was one of Rutan's designs:

"The oblique wing was the brainchild of NASA aeronautical engineer Robert T. Jones, whose analytical and wind tunnel studies at the NASA Ames Research Center, Moffet Field, CA, indicated that an oblique wing, supersonic transport might achieve twice the fuel economy of an aircraft sporting more conventional wings."

https://www.nasa.gov/centers/dryden/...AD1/index.html