What are people's thoughts on this? I've mind set to light (or whatever they call it), cause I find the heavy mode to be too drastic a change to driving feel. The second you get off the accelerator the car slows right down. So I'm wondering -- how much does going from heavy regen to light regen affect range? Is this effect lessened or increased by the percentages of city/highway driving one does? I'm just wondering if I should bite the bullet and get used to the heavy mode if it really is that much more efficient.