"A pledge from an up-to-date motor girl!" cried Jack gaily, and his words ended the strain that was on them all. Sid slipped out, and Ida was led away by Cora. Then such talking as there was between Ed and Jack! "Well, did you ever hear such a yarn?" asked Jack. "Did you suspect him, Ed?" "Yes, but I thought his motive was a different one. I had an idea the strain would soon tell on him--or Ida. I'm glad it's over." "So am I!" exclaimed Cora, coming into the room, having parted from Ida. "Oh, I feel years younger!" "Look out!" warned Ed. "You'll soon be a mere infant again if you keep on." "I don't care!" she cried. "Come on out and take a long run in the Whirlwind. I want to get some of the cobwebs swept off my brain with a glorious breeze. Come, Jack--Ed." They went with her, each one happier than they had been in many days. "Oh! There are Belle and Bess!" cried Cora. "I must tell them." "Well," remarked Ed, when Cora and Belle had about talked themselves out, "I suppose you motor girls call that quite a series of adventures?" "Indeed we do," answered Cora. "I don't know that I care to have any more just like them." But, though no adventures just like those narrated here occurred to the motor girls, the possession of their new cars led them into a strange complication not long afterward, and the details of it will be set down in the next book of this series, to be entitled: "The Motor Girls on a Tour; or, Keeping a Strange Promise." "Let's have a race!" cried Jack, who was handling the new car of the twins. "Come on, Cora, I challenge you." "Not now, Jack, dear," replied his sister. "I just want to rest--and think," and she slowed her car down and ran along a quiet country road, with Bess and Jack trailing in the rear. THE END