The balloons were released all over the city, landing in the hands of everyone from middle-aged women to construction workers. Check out 'Adéu, Barcelona!' here, an adorable video documenting Lucas Jatoba's ballooning goodbye gift.
Implications - I think it's safe to say this is one of the most creative and original ways I've ever seen someone give a gift to a city. Actually, I think it's safe to say this is the only time I've ever seen someone give a gift to an entire city. Lucas Jatoba is certainly number one for ingenuity.