Carmenita is a white car and has special gears. They are to only be used by professionals, as Pops says. Carmenita is supposed to resemble a Volkswagen Karmann Ghia, possibly due to the familiar name.
Carmenita has special gears which gives "her" the ability to fly and glide with wings.
Before Mordecai and Rigby asked Pops to borrow Carmenita, Pops was seen washing the car with a towel. Trash and Scabitha didn't seem to be interested in the car, they only wanted to make their boyfriends jealous so they can appreciate them more. The car was hit and it released the engine, causing Mordecai and Rigby to fall to the ground. It landed safely, but it crashed at a tree. Rigby mentioned that they had to pay for the damages for Carmenita, In Skips Stress, the gang flew to the bell in her.