Cinematograffiti 61

This quote says it all:

"This meant that every two weeks the artwork from the prior fortnight was destroyed, making way for a new piece and making a nice comment on the transient nature of graffiti. The use of the bus itself as a canvas was a homage to the public-transport origins of graffiti and quickly became a central hub for graff on the island, with sneaky tags multiplying daily and rapidly filling every spare inch of the bus' body and windows."