McDonald's Reflective Billboard

How cool is this! McDonalds have created an advert on a billboard that can only be seen at night! The billboard remains white and blank during the day but when night falls and passing traffic's light shine up the billboard the message is revealed! The idea is to let passers by know that McDonalds is open 24 hours a day. To be honest, with my driving, if I saw this I'd double take and probably crash haha!

Via Design Taxi.