A procession or parade of cars traveling together, usually carrying important people.
From motor + cavalcade (a procession of riders on horseback). Cavalcade comes from Spanish cabalgada. This word was invented in the early 1900s when automobiles replaced horse processions.
Motorcade is a genuinely modern invention—someone literally combined 'motor' with the old word 'cavalcade' when cars appeared, creating a word that shows exactly how technology forces language to update itself.
Complete word intelligence in one call. Free tier — 50 lookups/day.