Influenced by the "Wash Me" finger art on dirty cars, street artists art finding another way to express themselves.

Looking for soot covered or dirty surfaces, street artists use brushes, scrapers and even pressure hoses to make these great pieces.

Some examples from Brazil's Alexandre Orion:
The mural, comprised of a series of skulls, very succinctly reminds drivers of the impact their emissions are having on the planet. More pics after the jump.

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