"The Cruise of the Gyro-Car" by Herbert Strang is a fictional adventure novel written in the early 20th century. The story revolves around the innovative gyro-car, a unique mode of transport, and follows Maurice and George Buckland, brothers embroiled in a thrilling escapade marked by espionage and pursuit as they navigate Europe. At the start of the book, the Buckland family is introduced, with Maurice arriving home from Sofia, Bulgaria, for a brief holiday. His younger brother, George, has been busy crafting his gyro-car, which leads to an unfortunate accident involving the car just as Maurice returns. As the story unfolds, the brothers quickly find themselves caught in an intrigue involving foreign spies, particularly a Count Slavianski, who appears to be shadowing them. Through various mishaps, misunderstandings, and narrow escapes, they set off on an adventure that tests their ingenuity and bravery, all fueled by a mix of humor and tension. (This is an automatically generated summary.)