A hot rod is a modified car, typically built for high performance and speed. These vehicles often feature powerful engines, lightweight bodies, and custom designs. Hot rods originated in the United States during the 1930s and 1940s, when car enthusiasts began to enhance their vehicles for racing and personal expression. The modifications on hot rods can include upgraded suspensions, improved brakes, and unique paint jobs. Many hot rods are based on classic cars, such as those from the Ford or Chevrolet brands. The culture surrounding hot rods includes car shows, races, and a strong sense of community among enthusiasts.