This is the story of one car--a 1911 Stevens-Duryea Model Y "Big Six"--and its famous owner Percival Lowell, the American astronomer best known for his studies of Mars and mathematical prediction of the discovery of Pluto. The narrative follows the vehicle, a product of Frank Duryea--of the pioneering Duryea brothers--through its time with Lowell and through subsequent owners to its present status as a moving landmark of history. This automobile made its debut in Flagstaff, which was at that time a frontier logging and cow town of Arizona with unpaved streets in what was not yet even one of the United States. It survived the years from 1911 when delivered to Lowell, through his death in 1916, through occasional use until 1938 when it was "abandoned," then through sixty subsequent years of neglect before being restored to its original form and condition and finally returning to Lowell Observatory on Mars Hill overlooking Flagstaff. Many of the important developments in the early history of the gasoline-powered automobile are traced to establish the context in which this remarkable vehicle was created. The community in which the Duryea brothers labored, in short lived teamwork, and their role in the evolution of the automobile industry are discussed. The text also provides an intimate look at the life of one of America's most important astronomers.