This CNN article showcases several inventions for bicycle lighting, but it can be applied to other types of vehicles: http://www.cnn.com/2013/09/13/tech/the-laser-light-that-could-cyclist/
The laser projected head light concept is interesting. Vehicle lighting has not changed much in the past 100 years. It is interesting to consider how new lighting concepts could be applied to other types of vehicles.
Lighting also applies to surfaces of cars and helmets: http://www.youtube.com/watch?feature=player_embedded&v=RYfERdSAtNw