WearTec

Some modern cars no feature rain sensors, that automatically activate the windscreen wipers when the windscreen gets wet. Similar technology has new been used by Elise Co, to create the prototype of a rain coat equipped with wearable technology.
Co’s rain coat is equipped with water sensors that, when exposed to water (ie rain) cause a number of electroluminescent panels to light up and flicker, simulating falling rain drops.

Personally I think this is an interesting idea that needs to be modified to have some commercial potential. After all, who needs a rain coat that simulates rain when you’re already getting drenched?
Use the rain sensors to light up areas at the back and front of the coat to increase visibility in poor weather conditions (and safe the rain coat wearer from being run over by a car or two), and you have found yourself a potential market.

[source: Discovery Channel]