A hybrid vehicle drive system including an engine, an electric motor operated by an electric energy stored in a storage device, a power transmission having a rear-drive position, a shift lever for selecting the rear-drive position, a rear-drive shifting device for placing the power transmission...http://www.google.fr/patents/US5847469?utm_source=gb-gplus-shareBrevet US5847469 - Hybrid drive system wherein electric motor or engine is selectively used for rearward driving of vehicle
Hybrid drive system wherein electric motor or engine is selectively used for ...