The driver swore; lashed the reins over the nag's back.
The driver probably swore, but he didn't switch on the intercom for Meyer to hear it.
The drivers would veer away, or hoot and swear.
Those drivers swear by a clutch and gearshift.
The driver stared, then looked back at the trench and swore.
The driver swore and threw the steering wheel to the right to avoid the same hole with the rear tire.
Their drivers rolled down the windows and swore enthusiastically.
The driver swore half in relief, half in restrained panic.
Their drivers swore "camels would get fat where a jackass would starve to death."
The driver swore at the controls, finding the machine hard to handle.