some quick math, assuming 2-3hrs of freeway driving, and a 18 gallon tank since thats what my explorer sport has.
3hrs driving x 65mph = 195 miles
+
3 more hrs driving x 65 = 195 miles
195+195 = 390 miles per tank.
390 miles / 18 gallon tank = 21.6 mpg.
quit your *****ing. i get 18 on the freeway, and about 13-14 on the streets. and that 18 on the freeway is for about 25 miles street driving, and the rest on the freeway, so its not an average but a pretty close estimate of what i get for MPG on the highway.
you want good gas mileage, buy a honda insight. my teacher averaged 60mpg...