Orderly Pitties
From Pixar Cars Wiki
The Orderly Pitties are a group of turquoise pitties that work as assistants for Dr. Mater and presumably other doctors at St. Vintage Hospital.
History
In Rescue Squad Mater, the Orderly Pitties are forklifts who carry McQueen into the O.R. and shut the door as Dr. Mater begins to work.