The future of GM's green vehicles includes a substantial push in the realm of electric vehicles, but will likely begin with conveyances equipped with a "series hybrid." The technology would employ electric motors, utilizing power from lithium ion battery packs, mated to a "backup" engine, powered by either gasoline or diesel.
GM is also developing a plug-in hybrid, currently dubbed internally as the I-car, which will likely be debuted sometime in 2007.
The biggest hurdle on the horizon is the battery packs themselves, as current technology doesn't allow for a charge to be held long enough to give consumers the range they demand.
We'll be there to cover the General's unveilings on Wednesday, so, as always, watch this space.