While dirt would seem to be a slippery surface compared to pavement, a sprint car bites into the dirt and can outaccelerate almost any other vehicle: 0 to 60 in about 3 seconds.
While dirt would seem to be a slippery surface compared to pavement, a sprint car bites into the dirt and can accelerate faster than almost any other vehicle: 0 to 95kph in about 3 seconds.
Video of the annual riderless race in Ronciglione shows that horses there do make turns, although the surface is slippery and they don't seem to be running at full speed.