Is This Where Elio Got Their 84 MPG Number?

One of the things I've never fully understood about Elio Motor's still-not-quite-real new car is their focus on a gas mileage rating of 84 MPG. Why 84? Why not 85, or 80? What's so magical about 84? They almost certainly picked that number for non-technical reasons, since they don't even have an engine yet. Maybe it… » 12/01/14 9:25pm 12/01/14 9:25pm