Physically impossible. Air drag increases with the cube of velocity.
You already posted this.
Perhaps you need to enlighten yourself with how Bosch L-Jet fuel injection works.
If the car’s fuelling is rich below a certain RPM point, it can very well do what I describe.
Say what you will. At 55 mph, I can go about 14.3 miles on a gallon of gas. At 65-70 mph, I can go just over 15-15.2 miles on a gallon of gas. I’ve measured this based on the same course, same time of day, etc.
Nonsense. My Jaguar XK8 is in sixth gear turning 2100 RPM at 90 MPH. It is in fifth gear turning 2800 RPM at 55. That's a simple matter of gearing and physics. My instantaneous fuel economy at 70 MPH on flat ground is around 35 MPG. At 55 it is around 26 MPG.
In any case it is none of anyone's business how I use the fuel I buy. It is, however, everyone's business when some idiot is acting like they are the only person on the road that we all paid for.
I’m glad to see at lease one other person on this thread who didn’t sleep through physics. My boss, an engineer/racer disucss these misconceptions all the time.