actually a Honda 90 motorcycle(90cc engine) circa 1960’s got 100mpg(top speed 60mph),with the 100cc and 125cc succesively less mpg.
You are correct, I was just using a little hyperbole for humor. In Indiana motorized bicycles have made a big comeback because they are not considered a “motor vehicle” for traffic law purposes and people with suspended licenses can drive them legally on roadways with speed limits of 30 mph or less.