Both she and Jan noticed that the wagon was empty and the horse driverless.
"The Emperor of Portugallia"
Selma Lagerlof
Big Louie's face was upturned, and the explanation of the two rifle reports and the driverless team was here.
"Then I'll Come Back to You"
Larry Evans
A pair of wondering, patient, driverless horses watched the departure, but they did not move from the spot where they had been checked by the first attack.
"Castle Craneycrow"
George Barr McCutcheon