John also answered the second part of the question — the unique roadrunner sculpture is made entirely out of metal and trash (from the old city dump).
It’s located off Interstate 10, near the airport. More specifically it’s at the rest area just past exit 135, going east. There is accessible parking and a level sidewalk to the viewing area, but there’s no accessible path out to the sculpture. But to be fair, there’s no path out to the sculpture at all — just a low cable fence and a warning sign about snakes in the area.
Still, you can get a good (safe) look at the sculpture from the viewing area. All in all, it’s a cool kitsch road trip stop, so check it out next time you’re in the neighborhood.