G.N.Miller/NYPost A carriage horse became “agitated” and got loose in Manhattan on Sunday afternoon — darting toward the West Side Highway and dragging its operator behind, police said.

A horse was able to escape its carriage and wreak havoc on Manhattan Sunday, crushing cars before sprinting down the West Side Highway. Video captured the aftermath of the horse's destruction ...

The trouble started when the carriage malfunctioned and the driver tried to fix it. Gunner, a 15-year-old horse, became agitated and briefly dragged the driver when they started to adjust the canopy.

A carriage driver went on trial Tuesday over a horse’s collapse on a Manhattan street, in a criminal case that encapsulates years of modern-day strife over an old-timey tourist attraction.