Couch fires are a thing in IV.
Sometimes people write concerned opinion pieces for the Nexus to try to convince people to stop doing this.
A map of couch fire calls tweeted by @SBCFireDispatch from January 2013 to mid-June 2013, about 50 reports, mostly on Del Playa and Trigo between Camino Corto and Camino Del Sur:
Couch fires often damage the top layer of asphalt on the road, causing potholes and grit. Examples from Sueno Road: