I've been seriously considering buying one, but can't decide if the brakes cutting out will be a problem. I live at the top of a steep hill, so it sounds like

I've been seriously considering buying one, but can't decide if the brakes cutting out will be a problem. I live at the top of a steep hill, so it sounds like I wouldn't be able to leave my house on a full charge. Maybe I could just do a bit of trial and error to figure out how much "room" I need for the downhill?