motorcade
n. countable B2 Upper Intermediate US //ˈmoʊtɝˌkeɪd// UK //mˈəʊtəkˌeɪd// mo·tor·cade
n. a group of vehicles that travel together, usually to protect or follow a very important person. You often see these when a leader or celebrity is moving through a city.
n. a procession of vehicles, typically motor vehicles, traveling together for the purpose of escorting or protecting a person of high status. Often used in the context of political or celebrity security.
The motorcade arrived at the hotel in the middle of the night.
A large motorcade of black SUVs and police cars escorted the president through the crowded city streets.
The security detail was extensive, with a motorcade stretching for several blocks to ensure the dignitary's safety during the high-profile international summit.
Blend of motor + cavalcade.