Larry stepped in.
"Are you followed, sir ?" inquired the man.
"I don't know." "We'd better make certain.

If you are, we'll lose them, sir.

We'll stop somewhere and change our license plates again." Instead of getting into the unlighted body with him, as Larry had expected, the man closed the door, mounted to the seat beside the chauffeur, and the car shot west and turned up Riverside Drive.
One may break the speed laws in New York if one has the speed, and if one has the ability to get away with it.

This car had both.

Never before had Larry driven so rapidly within New York City limits; he knew this, that any trailing taxicab would be lost behind.