Unlike battery-electric vehicles, which are plugged into the power grid, hybrids combine a small gasoline engine with an electric motor and travel under their own power.
(battery-electric vehicles; are plugged; into the power grid) (hybrids; combine; a small gasoline engine; with an electric motor and travel under their own power)
battery-electric vehicles hybrids
are plugged combine
into the power grid
a small gasoline engine with an electric motor and travel under their own power