We will be giving a presentation on the Vonnen performance hybrid system this weekend at the PCA Tech Tactics West event. Saturday and Sunday 12/1, 12/2. A Vonnen 991 will be on display.
This is a cool event and there are a number of other interesting speakers as well, including Chief Engineer of the 919 Hybrid EVO, Stephen Mitas
This event requires registration, and the official page indicates it is closed. However my understanding is there are some seats open so if anyone wants to attend contact me and I will help you find the back-door registration process.
https://www.pca.org/event/2018-08-22/tech-tactics-west-2018
This event will be held at the Porsche Training facility in Eastvale, California (Los Angeles area)