You're referring to the MTSU project. There are videos and articles and they've had some limited success. Protean purchased a bike/scooter hub motor manufacturer in China, and struck a deal with FAW Volkswagen (China) a few years back, for Hybrid development. Protean also partnered recently, stateside with ConMed in Vancouver Wa, for development of Hybrid vehicle fleets. Here are a few links:
http://www.proteanelectric.com/
https://cleantechnica.com/2012/07/26/mileage-boosting-drop-in-plug-in-hybrid-retrofit-kit/
And a pic:
http://www.proteanelectric.com/
https://cleantechnica.com/2012/07/26/mileage-boosting-drop-in-plug-in-hybrid-retrofit-kit/
And a pic:
