Hecho is a golf car that showed up in the episode 3 Out of Commision.
Car became alive in the Season 3 episode "Out of Commission", and had a short lived life. He was created when Mordecai and Rigby poured soda on his hood, which brought his motor to life. However he was unable to enjoy his new life due to having been replaced by a new cart and being scheduled to be scrapped at the dump, so to make his short life worthwhile, Mordecai and Rigby decided to let him experience all the fun he could have and then grant his dying wishes which were to see the sunset, get a "real" car wash, get into a fight at the Family Restaurant, and go off a cliff into an ocean with fireworks from a third-world country. After he sank and exploded, Benson called Mordecai and Rigby to tell them that they needed the old cart back due to the new one being too expensive. Mordecai then somberly told Rigby that they needed to get the cart out of the water. After this the cart was likely repaired or replaced but was apparently no longer alive.