Huge increase in Toyota hybrid production soon? PHEV angle?

It's gotta be more than the Prius, right?

Toyota has sold more than one million hybrid cars in the US alone. In the next few years, according to reports, Toyota also plans to add 10 new vehicles to its hybrid segment. Consequently, Toyota believes it can start selling 1 million hybrid vehicles per year early in the next decade.

Impossible? Not without a significant increase in energy prices? Not without a plug-in? Not without a cheaper hybrid?

Something new seems required to achieve such a prediction. Is it possible that Toyota could quickly flood the US market with plug-in hybrids much faster than most are anticipating? That's my bet (or is it hope?).