What did the old cars run on in 1900s?

The first automobiles, introduced in the late 1800s, primarily ran on gasoline. Gasoline engines were becoming more popular due to their superior fuel efficiency compared to steam engines, which had been widely used in the early days of automotive development. By the 1900s, gasoline-powered cars were the dominant type of automobile. However, steam engines were still used in some vehicles, particularly heavy-duty trucks and buses, until the 1920s and even beyond in some cases. Electric vehicles were also emerging during this period, but they faced significant challenges related to limited battery range and underdeveloped charging infrastructure.