The lower you are pushing your car's CdA, the higher you are pushing your patience during glides... Suddenly while driving you are realizing that you spend more time with the right foot over the break pedal, ready to break (*), than touching the accelerator.
(*) it saved my car last week
when a woman changed from the left lane to my lane just in front of me and braked hard when she realized she couldn't change to the right lane which was totally stalled. I just remembered seeing a "van of the year" sticker approaching at full speed right to my head...
I don't remember how I successfully brake before megane's front would crash on her rear. The saddest is that the van had a "school bus" sticker on it...
It also saved me a lot of brake dust as the saved one second period (to change the right foot from the accelerator to the brake) permits to have a lighter push on the brake
Denis.