The Fastest Radio Flyer Wagon You'll (Probably) Ever See 35.82K Jeff Neumann 10/12/10 05:58AM Filed to: Cars Cars Hobbies Alaska radio flyer Wagon Ap pic Fred Keller and Judy Foster of Wasilla, Alaska converted their 1976 Mazda pickup truck into a giant Radio Flyer wagon. It took 11 months to build. Keller says, "you kind of get the sensation of driving a sports car." [AP, video]