Holograms for bikes.

[JohnCade]

Seems like a good idea for commuters is towns. I imagine economies of scale will bring the price down.


http://www.theguardian.com/business/2014/aug/24/laserlight-lifesaver-cyclists-emily-brooke

 

[Gubbins]

The only problem I see with this is using a laser on the road! There may be rules against such things.