Halves the length, but doubles the width. I think the convenience of stick folder designs in people-friendly spaces (ie not car trunks or luggage racks) shows that footprint is, in such scenarios, more important than other measures of size. If stood on end (front of the bike pointing up), the minibike has a smaller footprint than a bike folded by a hinged frame or fork pivots. In people sized spaces, it isn't like someone is going to be standing on top of your bike. On an elevator, for example, you will most likely be standing next to your folded bike and the space directly over the bike will be empty.