Chiswick flyover

The Chiswick flyover was a part of the M4 motorway.

At some point between 2008 and 2010, a A female sentient concrete disguised itself as the Chiswick flyover and telepathically controlled people. (TV: The Nightmare Man) Sarah Jane Smith and her friends defeated and destroyed it, with only part of the sentient concrete remaining. (PROSE: The Nightmare Man)