Sky Way Systems looks interesting. But is it worth to invest? They are selling companys shares at pennny cost at the moment, but this is company based in Baltarussia. They have almost confirmed orders from many governments, but does it goes all well?? Hard to say.
Hyperloop One - of course much more clear company with Elon Musk behind, But this trasportation is only for long distances, Sky Way have concepts for long distances, city concepts and many other functionalities.