Cowey Engineering Co. Ltd., based in Kew Gardens, Surrey, was active from 1910 to 1915. The company gained attention at the 1910 Olympia Show, where it showcased two experimental cars featuring an innovative pneumatic suspension system. This system utilized four cylinders of compressed air in place of traditional springs and included a self-leveling device, a concept that would later be refined in vehicles such as the Citroën DS 19. The initial…