I've only had my HCH for less than two weeks, so I'm still getting accustomed to the best driving style (though I've been reading this forum for months). I've noticed that, on the highway, my MPG always suffers when I use cruise, even on flat terrain. Am I just imagining this? I've always heard the conventional wisdom that cruise is generally the most fuel-effecient mode of operation that one can drive in. Maybe it just doesn't take full advantage of the hybrid powertrain?