I'm a two car family. My kids are all grown up. My wife drives to work. I've been bike commuting for three years and the only time I use my car is when I need to transport bulky items that's too inconvenient for the bike or if I have to get somewhere too far away by bike.
My wife suggested we get rid of the second car but I rejected because we do a lot of things separately and me without a car limits me from those I've mentioned above. So my car usually just sits around but it's an appliance available when I need it.