The following documents detail important milestones in the development history of The American Roadster™.
- This article from the July 6, 1973 edition of The Orange County Register. Note reference to John Green, Preident of Omega Clean Air Conversions, Inc. holding seminars at the Anaheim Contention Center.
- This partial copy of the patent issued to John S Green on January 26, 1999 by the Commissioner of Patents and trademarks.
- This diagram of the compression technology from the patent.