2002 Toyota Sienna mpg at 50 mph

Remember that gasoline crunch we had back in the 1970’s? In response my local high school hosted a student car “race”, held out back on the school 1/4 mile track, and the winner was the car that got the best mpg over a 40 miles run, 160 times around. An energy conservation race. It didn’t matter how fast they drove or how long it took to go 40 miles, just the mpg. That wasn’t the most exciting car race I’ve ever seen – the students who entered found they got the best mpg at about 25 mph. That was one very slow “race”.