He felt a strange vibration that the driver had not noticed.

Under other circumstances the driver of the Escort would have noticed all this, and more.

Making certain the driver didn't notice, he turned and caught up with the wagon.

Yet the Vector doesn't miss the mark by much, and not in a way that many drivers would notice.

The door opened so quietly that the sleepy driver did not notice it.

The driver noticed my strange appearance and could not help laughing.

The driver, helping him to get in, noticed a piece of paper lying on the front seat.

"Most drivers don't even notice when the system is working," he said.

The driver looked around and noticed the passenger in the next car.

The driver noticed the green Audi at the side of the road.