When did the role of gas station attendant become popular?

The role of gas station attendant became popular in the early 20th century, particularly during the 1920s and 1930s, as automobiles became more common. Attendants provided essential services, including fueling vehicles, checking oil, and offering tire assistance. The profession peaked in the mid-20th century but has declined with the rise of self-service gas stations since the 1970s.