Launched in 1997, this Toyota features a dual engine system called a hybrid synergy drive
[DOC] [TLE] Toyota Hybrid System - EV World [PAR] The new Prius features THS II, Toyota's next-generation hibrid technology ... all-
new Prius with THS II, a Hybrid Synergy Drive concept that delivers ... hybrid 
vehicles (HV) that combine an engine and a motor, fusing the advantages of ... 
the completion of a new power train called the Toyota Hybrid System (THS) for 
use in... [DOC] [TLE] Case study: Toyota Hybrid Synergy Drive [PAR] Lexus Hybrid Drive system has since been touted for its increase in vehicle 
power as ...