('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'.
(..) Look. The people you are after are the people you depend on. We cook your meals. We haul your trash. We connect your calls. We drive your ambulances. We guard you while you sleep. Do not fuck with us. Ball check! Bob, you're this way. Let's go. (..)1999 Fight Club