This is amazing, the idea is really simple and very cheap.
In times of ‘the financial crisis’ it’s important to communicate that cars are becoming more fuel efficient. And the medium that fits the most in this theme is money itself off course. DDB Berlin distributed 5,000 modified euro bills, the only thing they did was put a stamp on them. Estimates are they reached over 50,000 people with this campaign. Surely not everyone who got this bill saw the stamp, but it still has a lot of impact for it’s price. The only question I have with this idea… Is it legal?