For centuries, humans had believed that there would be a way to move quicker and more easily without the use of animals such as horses or donkeys. They knew that mechanics and scientific innovation would lead to the invention of a carriage which was powered by nature and working parts rather than biological life. But it was not until the Late Medieval era that educated individuals began to look more closely at how this dream could be achieved. Leonardo da Vinci was one of these creators, and was possibly the first to design and draw up plans for vehicles such as flying machines and tanks. Despite the sophisticated and potentially viable ideas da Vinci came up with, according to modern research, most of them would not work if they were actually attempted. It was a nice try, however.