The project is said to be based on open design and open source principles calling for feedback. Here are the two related quotes:
“Hyperloop is also unique in that it is an open design concept, similar to Linux. Feedback is desired from the community that can helpadvance the Hyperloop design and bring it from concept to reality.”
“The intent of this document has been to create a new open source form of transportation that could revolutionize travel. The authors welcome feedback and will incorporate it into future revisions of the Hyperloop project, following other open source models such as Linux.
Via Sepp Hasslberger