the driver. Fuller said he had achieved fuel economy of 36 mpg (7.8l/100 km) and to have reached a speed of . Prototypes Two and Three featured developmental improvements including a lighter three-frame chassis central periscope providing rearward vision, larger side windows, recessed headlights and a roof-mounted stabilizer with rear-facing exhaust outlet. Videos: In contemporary videos (see External links, below), Fuller is seen driving the vehicle at high speed. In another Fuller showing off his speeding ticket, demonstrating its ability to turn "on itself", easily parallel parking in a space only six inches longer than the car, remarking that he averaged over 22 mpg (up to 30 mpg), and commenting on its stability, with a center of gravity both low and ahead of the midpoint of its wheelbase. Later prototype history Prototype One was badly damaged in the noted car crash at the time of the 1933 Chicago Century of Progress fair. The car was repaired and sold to the director of the automotive division of the U.S. Bureau of Standards (BoS), only to be subsequently destroyed in a fire at the Washington D.C. garage of the BoS. Prototype Two survives in the Harrah Collection of the National Automobile Museum in Reno, Nevada. Prototype Two was initially purchased by Alfred Williams, manager of the Gulf Refining Company and driven cross country in a nationwide advertising promotion of aircraft fuel. In a contemporary video (see External links, below), Fuller notes that good friend Amelia Earhart asked that the Dymaxion be her official car for the celebration of her receiving the National Gold Medal from National Geographic. Dymaxion Prototype Two was driven to Washington and garnered considerable publicity. Prototype Three changed hands many times but was lost, presumed scrapped, in the 1950s. Once owned by Leopold Stokowski, it was estimated to have been driven 300,000 miles. In 1934, Noguchi drove a completed Dymaxion on an extended road trip through Connecticut with Clare Boothe Luce and Dorothy Hale, stopping to see Thornton Wilder in Hamden, Connecticut, before driving to Hartford for the out-of-town opening of Gertrude Stein's and Virgil Thomson's Four Saints in Three Acts. One of the prototypes was driven extensively in a campaign to raise funds in support of the Allies in WW II. Handling limitations Fuller and Burgess realized early that the Dymaxion concept would present considerable challenges. As anticipated, and in line with the purpose of the exploration, maneuvering