Final answer:
Streetcar suburbs were accessible and relied on public transportation, while automobile suburbs were car-dependent.
Step-by-step explanation:
Streetcar suburbs and automobile suburbs differed in terms of accessibility and transportation. Streetcar suburbs were more accessible and relied on public transportation, like streetcars, while automobile suburbs were car-dependent. As the popularity of automobiles grew, suburban areas were developed that were located farther from public transportation lines, allowing people to live outside of the traditional city limits. These automobile suburbs were built with the assumption that residents would own cars and be able to drive to work and other destinations.