Are you turning? Are you going in a straight line? And same thing for 70 miles an hour. So when we're seeing in general, there's variation in what the gas mileage is at 55 miles an hour and at 70 miles an hour. So what you'd probably want to do is say, well, what's my average mileage when I drive at 55 miles an hour? And compare that to the average mileage when I drive at 70. So because we have this variability in each of those cases, this is definitely a statistical question.