"Of course. Where are you going!"
They had kept straight on down the road and were now on the outskirts of the city. The houses were fewer and more scattered all the time and presently the boys would be in the open country.
"I don't know," said Bob. "I was just going ahead without thinking."
"We'd better go back, hadn't we? We must be about three miles from home."
"There's a road up ahead here to the right," said Bob. "We can turn down there and go back that way."
When they were about two hundred yards distant from the road in question, an automobile came out of it and turned into the main highway. A moment later it was speeding along in front of Bob and Hugh, the roar of its cutout coming faintly to their ears.
"Bob," exclaimed Hugh excitedly, "that's the gray roadster!"
"What gray roadster?"
"The one we passed in front of your house. It came from the Wernbergs'."
"Shall we follow it?"