Hybrid vehicles work very simply: They work with a gas engine and with an electric engine at the same time. You can either use one or another or even both. While you are using the gas engine, the electric engine charges itself so that you can use it later. These are very good for the environment since you use a gas engine (which makes CO2, which pollutes the atmosphere) less than the usual.
The 2012 Chevrolet Tahoe-Hybrid has a V8 engine.
The 2010 Toyota Highlander-Hybrid has a V6 engine.
The 2013 Toyota Highlander-Hybrid has a V6 engine.
The 2009 Cadillac Escalade-Hybrid has a V8 engine.
The 2012 GMC Yukon-Hybrid has a V8 engine.
The 2008 GMC Yukon-Hybrid has a V8 engine.
The 2008 Chevrolet Tahoe-Hybrid has a V8 engine.
The 2014 Toyota Highlander-Hybrid has a V6 engine.
The 2010 GMC Yukon-Hybrid has a V8 engine.
The 2011 Toyota Highlander-Hybrid has a V6 engine.
The 2007 Toyota Highlander-Hybrid has a V6 engine.