('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'.
(..) Shit. It's gonna be okay, Letty. I love you. - Watch her. - I got her. Come on, Vince! Hang in there! Come on! If he doesn't get to an ambulance in minutes, he's dead. - Hold the pressure. Hold his arm up. - I got it. Yeah. Yeah, this is Officer Brian O'Conner. I'm off-duty MAPD. (..)2001 The Fast and the Furious