A horsecar is a type of transportation that was used long ago before cars existed. It was like a big wagon with seats inside that people could sit on. Instead of being pulled by a machine or engine, it was pulled by horses who wore special harnesses around their bodies to help them pull the wagon.
When people wanted to go somewhere, they would wait for a horsecar to come by and then climb aboard. The driver or conductor would sit at the front of the wagon and guide the horses down the street. The horses walked along a pair of tracks that were built into the ground, which helped the wagon move smoothly and stay on track.
Horsecars were used in many big cities around the world during the 1800s and early 1900s. They were a popular way for people to get around before cars became more common.