Hubless bikes are kind of like hover boards – cool, but stuck firmly in the future. That doesn't mean we can help ourselves from swooning every time we see the hint of one.

Designer Alexander Kotlyarevsky's "Swordfish" concept bike shows off a sleek curved body that ends in two hubless wheels. Sure it doesn't look like it's the most comfortable bike to ride, but who needs comfort when you're this sexy? [Design Blog