I'm trying to think if there are any iconic roads in Britain, the way that Route 66 is in America. Ireland has the N17 (https://www.youtube.com/watch?v=32-WdYOeJLk). The M1 is pretty famous - it runs up and down the country like a spinal column - but I can't think of any songs. The M25, which goes round London, is known for its traffic jams and gave Orbital their name (https://www.youtube.com/watch?v=bV-hSgL1R74).