Story from Gizmodo Australia

University students bike it everywhere, I had to bike everywhere when I was at university. You would think a university town would have had designated bike lanes everywhere, but they often don't. That's where the LightLane would've come in handy.

Using lasers affixed to your bicycle, the LightLane concept projects a virtual bike lane around you, letting cars around you know their boundaries and making it a little safer for you.

However—judging by the photo—unless the LightLane was made out of some crazy strong lasers, it seems that it would only be most effective during the nighttime. On the other hand, if a car can't see you during the daytime, I suggest taking the bus. Or do what I do: bike on the sidewalks and see how many pedestrians you can knock down until you reach your destination.