A harness-race vehicle is a type of horse-drawn vehicle used in harness racing. The most common type of harness-race vehicle is the SULKY, which is a lightweight two-wheeled cart that is pulled by a single horse. The SULKY is designed to be lightweight and aerodynamic, allowing the horse to move quickly and efficiently. The driver of the SULKY sits in a seat behind the horse and guides the horse with reins. Harness racing is a popular sport in many countries, and the SULKY is an essential part of the race.