We've seen lots of creative uses for pico projectors. Now, a man has created what amounts to a head-up display (HUD) for his bicycle using a Raspberry Pi computer and a pico projector. Matt Richardson, a self-described "creative technologist, maker of things, video producer, and writer", is the inventor of this system. While the current iteration projects only speed, he has plans to add functionality such as GPS in order to project directions and maps. It is a pretty cool project, so check out the video below to see it in action.