The difficulty with motor bikes these days is that they are not all small and come in a variety of sizes. They are expensive machines and all we owners want them treated very carefully. With a car you simply park it with a motor bike we want to have it secured either on a special stand or to something secure like a bulk-head. I have to admit that then this usually tends to take up more space than just the bike as unless it's a proper stand then, it's difficult to put anything near it.