It looked like a three-wheeled coupé. It looked like the industrial designer's dream of the Plan For Tomorrow, excepting those three wheels. The Plan For Tomorrow should, by all rights, have four wheels. And, if the thing is going to fly, it should have some sort of overhead vanes, or wings, or engines, or jets, or even a skyhook. But there it was, coming down as light as a feather to make a neat landing on the back lawn. By the time the door was open, and the passenger stepped to the ground, Thomas was standing before the little sky car, looking somewhat dazed at the name: POLTERGEIST "Like a dream," said the driver of the sky car. "It should," said Thomas, covering his ignorance with monosyllabic agreement. "Handles well, too. I think we could stand a bit more positivity of control, though." "I'll look into it." "I wish you would. We've got the jump on the whole world with this. We'd like to keep it. But the thing doesn't answer to the wheel too solidly." "Uh-huh." "The chief engineer said, 'Jim, take that crate over to Lionel and see if he will beef up the control force a bit.' So here I am." "O.K., Jim," said Thomas, offering a prayer for the name that had been given unwittingly. The engineer must have been a busy boy! "How are you going to get back?" Jim looked up into the sky. "Jerry is following in the pilot model. He'll pick me up and we'll go on back thataway." Jim nodded skyward, and Thomas looked at the growing speck that must have been the pilot model. Thomas forgot about the pilot model. What he wanted to know was the whereabouts of the five tons of equipment that had been an integral part of this idea. He looked at the model. He wondered whether the engineer had installed the whole thing, stepping up the power and using the main part of the power to support the equipment. That did not seem possible. Any failure would cause the little sky car to collapse of its own dead weight. Besides there was not enough room in the little crate to pack all that equipment-tonnage. The engineer had achieved the impossible. He had done away with the main part while retaining the effect. The pilot model landed. It was not the finished job of the prototype. The cabin was squarely functional and the landing wheels were not faired into the hull. The rear end, instead of tapering gently into a narrow paraboloid of revolution, was a truncated four-sided pyramid. Jerry did not emerge. He merely tossed the door open and shouted: "Come on--we ain't got all day!" Thomas nodded. "I'll call you when I get it fixed."