> The gasoline engine only serves as a generator, it is not mechanically connected to the wheels. The Volt can operate in a series hybrid mode, but there is al

> The gasoline engine only serves as a generator, it is not mechanically connected to the wheels. The Volt can operate in a series hybrid mode, but there is also a mechanical connection that is engaged at certain speeds where it's more efficient to just direct drive rather than double-convert the energy from the combustion engine.