There ya go, that makes sense. I've hit 60 on the 650 a couple times only when putzing along back roads at sub 60ish, probably 50ish speeds enjoying the scenery et al. Think it's recorded on my fuelly once or twice. I normally get 50+ while keeping it under 65ish on the highway. Bolting along at 90+ does not render 50mpg or better, but I do that more rarely then putzing along.