What's the difference between a parallel, series, and plug-in hybrid, and why do you need to know? Everything about the technology and the vehicles for the shopper or the merely curious.

How does four wheel drive work? This video explains the workings of four wheel drive (4WD), and gives a definition in order to differentiate different types of four wheel drive and all wheel drive.

A range-extended electric vehicle pairs an electric motor with a gasoline engine/generator, which recharges the battery as you drive. An REEV powertrain differs from other hybrid setups because the ...