They put the car up during the middle of the day.
"We'll let it rest for a while," said Ted, as they ran it into a public garage. "This evening we'll take it out again, and if we're followed then we'll be sure that it is Checkers, and that he is on our trail."
It was seven o'clock when they trundled forth again.
A bright moonlight night made motoring highly enjoyable, and after they had run about for a couple of hours Bud got out, saying that he was tired of the sport, and would return to the hotel, and leave Ted to take the machine back to Don Dorrington's basement.
They had been followed by the yellow car again, but in going through Forest Park they had managed to give their trailer the slip among the intricate roads and bypaths, and had seen nothing of him for half an hour.
As soon as Ted had let Bud out, he hit up the speed, for the boulevard was comparatively free of traffic, and he fairly spun along to the western part of the city.
Cutting off the boulevard, he entered upon a side street to make a short cut to Dorrington's house.
He noticed, as he turned into the side street, a light-colored car standing close to the curb as he passed, but so many cars were standing in front of houses here and there that he paid no attention to it.
But he had no sooner passed than the light-colored car glided after him noiselessly. Ted's own machine was making so much noise that he was not aware of the presence of another car until it was abreast of him, and so close that he could reach out his hand and touch it.
He thought the car was trying to pass him close to the curb, and started to turn out to give it more steerage room.