Fifty plus years ago.
Hillsdale or Centerville, MI.
Ambulance is parked in the infield next to judges stand.
Horses (me included) are just coming up behind the starting gate and coming around the turn to start a race.
Ambulance gets a call.
Ambulance with lights on and siren blowing pulls on to the track and heads for the drawgate at the head of the streach.
Straight into the on coming starting gate and full field of horses.
No harm no foul, but boy oh boy did we ever scatter.