Hill 2 really makes stop and go traffic less annoying IMHOsiliconkiwi said:Hill turns on regen ONCE YOU PULL YOUR FOOT OFF THE ACCELERATOR. If you are accelerating, I believe there is no difference between D, H1 and H2. (From what i can tell of previous comments) most of us drive in hill 1 or hill 2 most of the time. Think of it as engine braking. I find it useful in stop and go highway traffic.