"Penny, I think there's some sort of lever over here by the car."
Penny flashed her beam in that direction and was relieved to see that her chum was right.
"It must operate the door, Susan! We should be out of here in a jiffy!"
Confidently, she grasped the long handle and pulled with all her strength upon the iron lever.
From below came the low rumble of moving machinery. Penny and Susan riveted their eyes hopefully upon the door. It did not open.
Instead, a square of floor upon which the roadster was resting, slowly began to sink.
Uttering a frightened scream, Susan tried to open the car door.
"Save me!" she cried frantically.
Penny leaped nimbly down upon the running board.
"It's all right," she laughed shakily. "We're only descending in an elevator."