shows track laps, location, etc. It's a SWEET setup. Plus the hybrid bike that is solar charged is such an awesome idea. It also looks good and has good performance. As a rider myself, and obviously a big tech guy (especially the concept of solar powered hybrids), I'd absolutely love to get my hands on that thingCool bike. I can see where a HUD would be useful on a bike because it would say how fast I was going, how much fuel, etc.