Aleksandr Aleksandrovich Porokhovschikov was a Russian and Soviet military engineer, tank and aircraft inventor from Saint Petersburg, known mostly for the development of Vezdekhod, the world's first tank in 1914–1915. Vezdekhod means 'he who goes anywhere' or 'all-terrain vehicle'. Vezdekhod was also the first caterpillar amphibious all-terrain vehicle. Subsequently, Porokhovschikov added wheels to his tank for steering, making it also the first tank design to combine caterpillar and wheel forms of movement. However, the steering was ineffectual, and his design rejected.