freeway blogging
n.β Β«Itβs a new American graffitiβthe art of freeway blogging. Americans driving to work or the mall are increasingly being confronted by guerrilla art, or political messages, strung across freeway bridges or staked on verges and embankments.Β» ββSign of the times: dissent on Americaβs highways” by Ros Davidson Sunday Herald (Glasgow, Scotland) Sept. 4, 2005. (source: Double-Tongued Dictionary)