I have a Bion-X with regenerative braking. I live in Seattle. It is extremely useful in the hills; my house is up a hill, if I start fully charged it's really a

I have a Bion-X with regenerative braking. I live in Seattle. It is extremely useful in the hills; my house is up a hill, if I start fully charged it's really annoying riding the brakes all the way down, but when not it's really nice glide.