From Longman Dictionary of Contemporary Englishcarloadcar‧load /ˈkɑːləʊd $ ˈkɑːrloʊd/ noun [countable] the amount of people or things a car can holdcarload of A carload of tourists pulled up and asked for directions.
Examples from the Corpus
carload• Stewart frequently would drive to Avon for weekends, often bringing a carload of friends.• The following month a twenty-two-year-old black man was shot and seriously injured by a carload of white men.• a carload of kids• A carload of friends and relations drive up to his premises, sign a visitors' book and ring for service.• Each carload of bricks will come out of the kiln with the same colored coating.• This year, the railroads carried 1.5 million carloads of chemicals.• Shortly three carloads of young women arrived, followed by the limousine carrying Long John Silver. 