What is the ruling on paying the car fare to the driver indirectly or by paying a second fare without his knowledge, after the driver said, "By Allah, do not pay," and I said, "By Allah, I must pay the fare"?

You are permitted to pay the fare to the driver of the car. The matter reverts to his intention in saying "by haram." It is irrelevant whether the driver knows or not. So, if someone swears not to eat a man's food, and then eats bread that his son brought out from the house of the one he swore against, and he (the swearer) was unaware, he has broken his oath.