The bicycle is one of the great, pure designs. Two wheels joined by a rigid frame strong enough to carry at least one person and perhaps some cargo, propelled by the strength of that person through a basic linkage of gearing.
There's not a lot of room for improvement, which is why the bike is one of those machines that has seen little enhancement since its modern inception in the mid-1800s. Sure, there are constant changes to materials and gearing, but the basic design has essentially remained the same.
That does not mean grand invention is not constantly attempted when it comes to our two-wheeled rigs and some of the accessories that accompany them. Here are five new innovations to the bike and bike use that are turning some heads.