As it says in its name, Android Auto was primarily designed for automobiles, a.k.a. cars. Those, however, aren't the only vehicles on wheels that warrants a safe way to interact with mobile apps and Internet services. While some might argue you shouldn't do that on a motorcycle anyway, the next best thing would be to have Apple CarPlay or Android Auto on a bike dashboard that few bikes even have. Fortunately, Harley-Davidson's 2021 bikes do and you can "upgrade" them to Android Auto soon.