('disapproving') She had a reputation for being an 'ambulance chaser'. [=a lawyer who gets clients by convincing accident victims that they should file a lawsuit about the accident]
She was taken 'by ambulance' [=in an ambulance] to the hospital.
They called (for) an 'ambulance'.
(..) It's so strange, just me and Aunt Connie in the house. - I feel better when I'm with you. - What's wrong, sweetheart? - I'm scared about my father. - Don't be. When they took him out of the ambulance, I thought he was dead. Everybody says he's going to be better. Don't worry. (..)1990 The Godfather Part III