It seems to be the usual hybrid method of a gas(/petrol) engine for driving at high speeds, with an electric motor for low speeds. The electric motor and gas engine combine forces when a lot of thrust is needed quickly (eg quickly accelerating to overtake)
The 2011 Toyota Camry-Hybrid has a continuously variable-speed automatic.
The 2011 Toyota Camry-Hybrid runs on regular unleaded.
The 2014 Toyota Camry-Hybrid has a continuously variable-speed automatic.
The 2013 Toyota Camry-Hybrid has a continuously variable-speed automatic.
The 2009 Toyota Camry-Hybrid runs on regular unleaded.
The 2007 Toyota Camry-Hybrid has a continuously variable-speed automatic.
The 2014 Toyota Camry-Hybrid runs on regular unleaded.
The 2007 Toyota Camry-Hybrid runs on regular unleaded.
The 2012 Toyota Camry-Hybrid runs on regular unleaded.
The 2009 Toyota Camry-Hybrid has a continuously variable-speed automatic.
The 2008 Toyota Camry-Hybrid runs on regular unleaded.
The 2010 Toyota Camry-Hybrid has a continuously variable-speed automatic.