Hyperloop mass transportation systems are actively developed at the moment. They represent the forefront development of the Zero Energy Transportation systems where air drag is minimized by travelling in a vacuum and friction is reduced by non-contact bearings. Hyperloop supporters are confident that the cost of their transportation systems would be low compared to existing transportation systems because of the low loss and therefore low energy consumption as well as other cost saving techniques documented in the Hyperloop Alpha specifications. However, there are other published designs in the form of patents that may improve on the designs of the Hyperloop systems so that sustainable mass transportation systems can be realized.